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The cited work could not be located through any authoritative source.","detected_doi":"10.1016/0304-3975(93","detected_arxiv_id":null,"ref_index":6,"audited_at":"2026-07-10T00:06:40.321842Z"}],"snapshot_sha256":"029e31cbf659c035b4a85739c6a44e4ebe589234a84ca838fbaffbef5146d8fe"},"events":[{"event_id":11370,"event_type":"pith.integrity.v1","payload_sha256":"e27e29be22e381d7ec681f76cedc2710b30147301b6738e43a673e2c9968d5ed","signature_b64":"8KZpnN3/DayxFZREc2Qe/W1pTGgCklhtvplWc6rz8IHZZbYsk57mJmc/u94zl7oYP4MVNZiR+HNJL7P7bEznBw==","signing_key_id":"pith-v1-2026-05","created_at":"2026-07-10T00:08:26.190910+00:00","payload":{"note":"Identifier '10.1016/0304-3975(93' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","snippet":"International Workshop on Computing by Graph Transformation (Bordeaux, 1991).doi:10.1016/0304-3975(93) 90064-Z. [CM26] Maria Chudnovsky and Ilya Maier. Induced cycles of many lengths.arXiv preprint arXiv:2602.06874,","arxiv_id":"2607.06869","detector":"doi_compliance","evidence":{"doi":"10.1016/0304-3975(93","arxiv_id":null,"ref_index":6,"raw_excerpt":"International Workshop on Computing by Graph Transformation (Bordeaux, 1991).doi:10.1016/0304-3975(93) 90064-Z. [CM26] Maria Chudnovsky and Ilya Maier. 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