{"as_of":"2026-08-17T02:10:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:65bd0cacc2c06803ffa6f113abf9375b71ae60e13797832b7546405d9e054c0d","coverage":[{"denominator":35,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":35,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-14T12:00:43.617021Z","state":"measured"},{"denominator":35,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":35,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-16T06:30:59.297886+00:00","state":"measured"},{"denominator":0,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"cited_works","source_observed_at":null,"state":"measured"}],"external_citation_measurements":[],"inbound":[],"links":{"evidence":"/evidence","html":"/paper/1908.07797/citation-record","integrity":"/paper/1908.07797/integrity","json":"/paper/1908.07797/citation-record.json","paper":"/paper/1908.07797"},"outbound":[{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.704465Z","title":null,"venue":null,"work_id":"b3c1cc17-aeca-4ece-95f1-539d6aad294d","year":2000},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":1,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.331016Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:ef286893b0c9cc3eeeb048b7f4d20f7102298bd8e18381e3e20e1152ccc0568c","observation_id":"0557da6c-deb6-418a-8b6d-1adab96b9cc4","resolution":{"observed_at":"2026-08-14T12:00:44.711664Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:43.342255Z","title":"Yu and F","venue":null,"work_id":null,"year":2014},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":2,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.342255Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:1abf194becbbf61e4dc166627d80c2f0d8d1ba0b12b65a04763eb07464676ef8","observation_id":"0fe59d7d-485f-4905-a9d4-4a98ec52c941","resolution":{"observed_at":"2026-08-14T12:00:43.342255Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:43.349566Z","title":"Lalanne and P","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":3,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.349566Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:8927a62d43b6533c56796853e00ca5338cb0e3f030582a9eb7957f54c9d96e56","observation_id":"76a84b6d-3adf-4d17-85a1-c43e246b529c","resolution":{"observed_at":"2026-08-14T12:00:43.349566Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.613429Z","title":"Verhagen, R","venue":null,"work_id":"49c50555-2fb0-4f44-9120-7d179d9c5d8a","year":2010},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":4,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.355627Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:b54c0e0520e9530de8396bcadab59e0981414c2222826def8d40523a6eb66fff","observation_id":"a7b728ac-78c7-4cce-8668-4b4b12d8ee6e","resolution":{"observed_at":"2026-08-14T12:00:44.622077Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.584637Z","title":null,"venue":null,"work_id":"1d2e23e6-5285-4044-a5b9-f90c62c2c3bc","year":2013},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":5,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.365152Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:a5413b1e1fce5a75aa1a42c10e924a546b3edda634ab7c47f44de1864876bd3d","observation_id":"dbf3faf0-eecf-45c5-aa81-fbee2f9a35e6","resolution":{"observed_at":"2026-08-14T12:00:44.599610Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.553714Z","title":null,"venue":null,"work_id":"40e001ba-b5ba-468e-b622-7020e8a8c99b","year":2014},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":6,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.373481Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:5f97f2797ef59b943a8373e9df7aa7b69012faf47be69aea1df2475f21a9181a","observation_id":"0f9c8e09-d106-4cda-96ff-ab64bd78bfba","resolution":{"observed_at":"2026-08-14T12:00:44.561356Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.526452Z","title":"Khorasaninejad, W","venue":null,"work_id":"e477f2fe-09f7-4d3a-8de5-70594dd9cd1b","year":2016},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":7,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.390531Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:f7f75934564659e9179c353cf08d873fe791abfaf3011b4e0baa3732981bfb86","observation_id":"b876f4e9-0c5d-4d36-b57f-568daa6fb290","resolution":{"observed_at":"2026-08-14T12:00:44.535598Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.500263Z","title":"Genevet, F","venue":null,"work_id":"0319800d-d12b-49df-a9e5-659a5945d498","year":2017},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":8,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.398827Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:6d51d67e3f82af1af26e46109dfb121b5e3e0d31f0b54dc7597301477d0e5440","observation_id":"1ec7b07e-6d11-4748-aa18-12b2a69b69e3","resolution":{"observed_at":"2026-08-14T12:00:44.508657Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.475971Z","title":null,"venue":null,"work_id":"1d741c44-0160-4cf5-8c64-4fd91e493526","year":2019},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":9,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.412567Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:e02857f41a01f2dfb0c1268ddee124f591aef57f0b6ca9ff8826b0dace29be67","observation_id":"317f31a7-6aea-4186-8864-89ce27d8fb44","resolution":{"observed_at":"2026-08-14T12:00:44.481700Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1103/physrevb.65.201104","metadata_source":"doi_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:43.688491Z","title":null,"venue":null,"work_id":"f70f86c8-bec0-48b5-9322-bfba2b1d90c9","year":2011},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":10,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.422369Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:8f585f4126a63d426b61d8279a6486a79b5be24e5aad52eb020b2ebb43924bb9","observation_id":"0019589a-920a-4304-9221-00c3a3ac632d","resolution":{"observed_at":"2026-08-14T12:00:43.700826Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.455258Z","title":"Banerji, M","venue":null,"work_id":"b200a611-acd2-4a59-8503-b0676e06a1fd","year":2019},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":11,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.432715Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:8e3b43cc43f0283b728fb61b693ac573bbe4bf62a615049352f8189c658c5513","observation_id":"bb3d3267-8145-4591-b50b-82c7645a997e","resolution":{"observed_at":"2026-08-14T12:00:44.461167Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.437006Z","title":"Peierls, Annalen der Physik 395, 1055 (1929)","venue":null,"work_id":"a092bcd9-46b3-407f-b1ec-666be807704f","year":1929},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":12,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.440286Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:f268b248a72cd07e68b42f349762d8193e3265d684e3a913b7207a44b2ae6b3e","observation_id":"602201ab-9031-4999-9c5d-856ce4a2c46a","resolution":{"observed_at":"2026-08-14T12:00:44.442736Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.396636Z","title":null,"venue":null,"work_id":"fc0e93a8-29eb-4e2b-959c-85219a3c8854","year":2007},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":13,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.449477Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:04b415ef096c3ab379028598d64dae204f9fd8eff25c911ec59a2896477bfee1","observation_id":"63796777-2b94-4846-a235-276ca77253e3","resolution":{"observed_at":"2026-08-14T12:00:44.419656Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.361231Z","title":"Chaplain, M","venue":null,"work_id":"b194dc08-5d56-4d44-94f2-12efdb5aadf8","year":2019},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":14,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.456824Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:8b7dde16ad152376b81960551887f37e6b1b1b83f8a9444f56fdb65f3e8d1596","observation_id":"3fb3c3c2-ab1f-4e15-ad4f-cec7dd4dadf2","resolution":{"observed_at":"2026-08-14T12:00:44.369584Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.337568Z","title":"Colombi, D","venue":null,"work_id":"6108fc3e-e3d1-4bac-b244-50f571329d34","year":2016},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":15,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.464332Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:e7110279b219d0c6ae50088a5fab2c57f3852384810aa1239d90ee0ac5580d38","observation_id":"36a229c1-0017-42bc-8d61-a803d17527b3","resolution":{"observed_at":"2026-08-14T12:00:44.343921Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.307205Z","title":"Colombi, V","venue":null,"work_id":"3a148d15-82e3-4dde-9dfb-066cc375d74d","year":2017},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":16,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.470213Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:9c48ff454b656b85b9ae8283daacaa127c50840d798357c557f95f5e79fc62dd","observation_id":"239d2839-146f-44d8-b50f-35a30ed10337","resolution":{"observed_at":"2026-08-14T12:00:44.317267Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1907.09297","last_updated":"2019-07-18T14:05:47Z","snapshot_observed_at":"2026-07-06T08:09:17.579596Z","submitted_at":"2019-07-18T14:05:47Z","title":"Graded metasurface for enhanced sensing and energy harvesting","version":1},"cited_work":{"arxiv_id":"1907.09297","doi":null,"metadata_source":"pith","pith_arxiv_id":"1907.09297","snapshot_observed_at":"2026-08-14T12:00:43.738114Z","title":"Graded metasurface for enhanced sensing and energy harvesting","venue":"physics.class-ph","work_id":"7ed64c66-4e00-41f4-945a-d760ef0c4b8d","year":2019},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":17,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.475946Z"},"links":{"cited_paper":"/paper/1907.09297","citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:aab4b029a555ffd4e3d5cc298a49cb48995ec9153b48bf2d8c05a659b7b76f46","observation_id":"3eb1416f-4bde-464f-97eb-aa9065f672c1","resolution":{"observed_at":"2026-08-14T12:00:43.747715Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.272088Z","title":null,"venue":null,"work_id":"994d0389-ebd3-4355-8b50-f7338de8c170","year":2019},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":18,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.487583Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:f8e3082c806f68406deb4e093a4d2602bff4cae49745875b3db5f279d3733e11","observation_id":"04197377-a4f5-4845-b0a5-fcbba9964887","resolution":{"observed_at":"2026-08-14T12:00:44.280406Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.248140Z","title":"Naqvi, IEEE Transactions on Antennas and Propagation 38, 584 (1990)","venue":null,"work_id":"a75a4f53-0d2c-4f69-b956-cc32bb8e350d","year":1990},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":19,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.493871Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:7b91674197fb43e860b46f083937b3491da781319924fc6e906199b98b34356f","observation_id":"1b568743-3cef-40a5-951c-cb61a697e0fd","resolution":{"observed_at":"2026-08-14T12:00:44.254658Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.221895Z","title":null,"venue":null,"work_id":"eaeaaafe-61d7-44d5-a2ec-e698747cc961","year":1999},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":20,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.505879Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:9b2bfa4540d3208445e301bef0a4e31364ba023beaa6ba04331de55194746952","observation_id":"3179553c-e93c-4374-8fcb-eb8e1d84dbe5","resolution":{"observed_at":"2026-08-14T12:00:44.230157Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.182748Z","title":null,"venue":null,"work_id":"4a6a12cf-c42b-457e-aae2-5b4e998ed575","year":2016},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":21,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.512647Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:21d5e6328a31da6a9afd76a8fb42f0e866f17258a121859fa282c49242532e02","observation_id":"55168b7f-9e23-478b-9d2a-6ea09aa3d72d","resolution":{"observed_at":"2026-08-14T12:00:44.193905Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.156442Z","title":null,"venue":null,"work_id":"16dcdc3e-51b9-404d-a4a2-4a7ae543eacb","year":1957},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":22,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.519454Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:898790329426e4d664597a3b8202a9e0ea87ee610acbfa0e56d86ab09cf6e2bb","observation_id":"2c75f4e1-d65e-47cd-853e-95a0165027b4","resolution":{"observed_at":"2026-08-14T12:00:44.162231Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.133226Z","title":null,"venue":null,"work_id":"0075ffa3-84a8-4032-bd84-d8f68be2aa65","year":2004},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":23,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.526518Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:bd74b606bbed19bc18a75ae6f00f0fd22fbd4a607e6a7e2a7930e2a3cca3aac5","observation_id":"95d17ab1-e576-43cd-a184-245302b4ed85","resolution":{"observed_at":"2026-08-14T12:00:44.142367Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.103521Z","title":"Mu ˜noz, G","venue":null,"work_id":"094a41d3-fc5c-4b19-9705-9eb9f9f833d0","year":2017},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":24,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.532039Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:6997ab8ad09a14f1973dd0a5e93779402f4b3b3ad22f03a1ead14bfd9076482b","observation_id":"4875c3ce-1798-452a-8a01-487703ad11d2","resolution":{"observed_at":"2026-08-14T12:00:44.110922Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:43.538255Z","title":null,"venue":null,"work_id":null,"year":2018},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":25,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.538255Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:ef45a4995a15c7b36b3ee420b5667a7e907d7467dba61ae1917cad84de1a91f8","observation_id":"bef6b6f4-6a09-41b6-b692-317ead581953","resolution":{"observed_at":"2026-08-14T12:00:43.538255Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.052717Z","title":null,"venue":null,"work_id":"2c6a976b-8888-4606-9433-44f0675264fd","year":1993},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":26,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.546920Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:4e04038ceec04a48b8c0801dc85f35ec64521e3ef594f86ab6c4684c981e10b6","observation_id":"e53d9ff1-aeb1-43df-aa02-7896c2f74691","resolution":{"observed_at":"2026-08-14T12:00:44.058620Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.029632Z","title":"Wang and W","venue":null,"work_id":"d810adf2-94be-44bc-943f-db030da5bdd6","year":2006},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":27,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.553622Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:87bf71fc97827feee5aeed32721f23facd2688e4383747c426fb6dfcd01eadfd","observation_id":"9a83f6be-0e9a-4575-bca6-d30779063b82","resolution":{"observed_at":"2026-08-14T12:00:44.037837Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:44.002324Z","title":"Brillouin, Wave propagation in periodic structures: electric filters and crystal lattices (Courier Corporation, 2003)","venue":null,"work_id":"0980fa8f-17f4-40cf-8c48-b5fd01781418","year":2003},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":28,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.564983Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:043ffa83341c538c70084e811cd2b8205172ac458c8d2c5e9191f982fd26b54f","observation_id":"5beac5ff-5929-4d05-a6e1-a9a026d0659b","resolution":{"observed_at":"2026-08-14T12:00:44.008242Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:43.968246Z","title":null,"venue":null,"work_id":"00d3c963-e6e5-4fdf-8072-d2da574ee61e","year":1996},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":29,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.571401Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:73dccdcad6637c4d3884cf220046752abd8a8b6ebf2987c5e2ecc3a1a374c234","observation_id":"e35af5bc-089b-4011-a147-ef70b75c549c","resolution":{"observed_at":"2026-08-14T12:00:43.975311Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:43.925208Z","title":null,"venue":null,"work_id":"87e15f4a-0e0c-4a17-b9f6-b1d06ff4ea2b","year":2002},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":30,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.579464Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:11ed7d9bb4c44931d0a9d119b5810699371e8d6580aa33b35a02ec847e20536c","observation_id":"a6ac102f-3344-4378-bc80-7c513e3b3ebc","resolution":{"observed_at":"2026-08-14T12:00:43.935253Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:43.900539Z","title":null,"venue":null,"work_id":"de56d4e6-f603-4a8c-b00b-812017ec5640","year":2014},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":31,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.592080Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:4b37632fbe4721da4aeb99b0db3113153cc82fc501fa58abc903efb85438dd6c","observation_id":"2bc56036-e2ba-4550-b58e-0eddad4d050b","resolution":{"observed_at":"2026-08-14T12:00:43.906730Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:43.867780Z","title":null,"venue":null,"work_id":"b756e028-1709-4246-80bc-b65eafebe214","year":2019},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":32,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.596874Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:7e0b789b0ba0db50707f6d36720a84cca8a2f22b4bef2ea8fb934c20301f6d4d","observation_id":"685b6e85-7959-434a-aadc-44af5b245e79","resolution":{"observed_at":"2026-08-14T12:00:43.876778Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:43.844113Z","title":"Bauer, The Journal of Chemical Physics 26, 1440 (1957)","venue":null,"work_id":"6da7f2bd-75d5-4f81-bd88-82c87bdcab9b","year":1957},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":33,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.601563Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:e542eb0f86e5e56997065ccbb4b362b02429363ada161d705cc9ee12002dcb19","observation_id":"f7c5676b-ed55-41f5-9b16-36c442a98581","resolution":{"observed_at":"2026-08-14T12:00:43.850478Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:43.808930Z","title":null,"venue":null,"work_id":"9bbb13e6-c2e1-4753-8a73-dae9180f7758","year":2012},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":34,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.607132Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:22fd131638773b1d7d55dba87b8401a68c2cb6d56ad416c9fffc5fd8a0b68d6d","observation_id":"1ab53c2c-39e9-41e1-b41d-09ba6c407525","resolution":{"observed_at":"2026-08-14T12:00:43.818503Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T12:00:43.768328Z","title":null,"venue":null,"work_id":"c8777d0b-0919-4940-9bd0-ffb0e7602dc1","year":2011},"citing_paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses","version":1},"reference_index":35,"source":"pdf_text","source_observed_at":"2026-08-14T12:00:43.617021Z"},"links":{"citing_paper":"/paper/1908.07797"},"observation_digest":"sha256:a7fff08e68ca833467601ff9a68b33be2e6e30511dd5dbf9d15d240a5a030099","observation_id":"1f88d667-8f60-42b6-b036-35e7e0290674","resolution":{"observed_at":"2026-08-14T12:00:43.779364Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}}],"paper":{"arxiv_id":"1908.07797","last_updated":"2019-08-21T11:09:27Z","latest_version":1,"primary_category":"physics.optics","snapshot_observed_at":"2026-08-14T11:53:42.005607Z","submitted_at":"2019-08-21T11:09:27Z","title":"Ultra-thin, entirely flat, Umklapp lenses"},"reference_resolution":{"displayed":35,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":20,"verified_exact":2,"verified_fuzzy":13},"total_outbound_references":35},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"thesis":"As of 17 August 2026, this Paper Citation Record lists 35 of 35 outbound references and 0 inbound Pith citation observations for arXiv:1908.07797."}