{"work":{"id":"b7abd1f3-6f83-4dc0-b66e-a38bfc23cf14","openalex_id":"https://openalex.org/W1992204683","doi":"10.1017/cbo9780511622632","arxiv_id":null,"raw_key":null,"title":"150–190.https://doi.org/10.1017/CBO9780511622632","authors":[{"given":"N. D.","family":"Birrell","sequence":"first","affiliation":[]},{"given":"P. C. W.","family":"Davies","sequence":"additional","affiliation":[]}],"authors_text":"N","year":1982,"venue":"Cambridge University Press eBooks","abstract":null,"external_url":"https://doi.org/10.1017/cbo9780511622632","cited_by_count":4616,"metadata_source":"doi_reference","metadata_fetched_at":"2026-07-10T17:37:26.038437+00:00","pith_arxiv_id":null,"created_at":"2026-05-08T17:53:53.703532+00:00","updated_at":"2026-07-10T17:37:26.038437+00:00","title_quality_ok":false,"display_title":"CambridgeMonographs on Mathematical Physics","render_title":"CambridgeMonographs on Mathematical Physics"},"hub":{"state":{"work_id":"b7abd1f3-6f83-4dc0-b66e-a38bfc23cf14","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":19,"external_cited_by_count":4616,"distinct_field_count":8,"first_pith_cited_at":"2025-11-04T01:57:18+00:00","last_pith_cited_at":"2026-07-08T18:01:39+00:00","author_build_status":"not_needed","summary_status":"needed","contexts_status":"needed","graph_status":"needed","ask_index_status":"not_needed","reader_status":"not_needed","recognition_status":"not_needed","updated_at":"2026-08-22T07:29:57.315684+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"background","n":6}],"polarity_counts":[{"context_polarity":"background","n":6}],"runs":{},"summary":{},"graph":{},"authors":[]}}