{"as_of":"2026-08-15T21:51:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:782bc6256855dae355bc40752b932bfc7a3425c60fc61c853266769f5a826d82","coverage":[{"denominator":0,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":1,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-15T06:32:42.880941+00:00","state":"measured"},{"denominator":1,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":1,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-01T01:40:40.011512Z","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":[{"citation":{"cited_paper":{"arxiv_id":"1111.5473","last_updated":"2012-06-11T22:50:52Z","snapshot_observed_at":"2026-08-15T04:28:02.604739Z","submitted_at":"2011-11-23T12:21:33Z","title":"Directed Steiner Tree and the Lasserre Hierarchy","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1111.5473","snapshot_observed_at":"2026-08-01T01:40:40.011512Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2607.25811","last_updated":"2026-07-28T14:57:36Z","snapshot_observed_at":"2026-08-15T17:41:42.098162Z","submitted_at":"2026-07-28T14:57:36Z","title":"Length-Constrained Network Design in Planar Digraphs","version":1},"reference_index":2011,"source":"pdf_text","source_observed_at":"2026-08-01T01:40:40.011512Z"},"links":{"cited_paper":"/paper/1111.5473","citing_paper":"/paper/2607.25811"},"observation_digest":"sha256:a4963a0b27042f9eec15677b10a326860ab7fe3909da9dbf21e0de31f447b282","observation_id":"6c89ce21-7394-4009-b5e2-ed23c14d15f0","resolution":{"observed_at":"2026-08-01T01:40:40.011512Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"links":{"evidence":"/evidence","html":"/paper/1111.5473/citation-record","integrity":"/paper/1111.5473/integrity","json":"/paper/1111.5473/citation-record.json","paper":"/paper/1111.5473"},"outbound":[],"paper":{"arxiv_id":"1111.5473","last_updated":"2012-06-11T22:50:52Z","latest_version":2,"primary_category":"cs.DS","snapshot_observed_at":"2026-08-15T04:28:02.604739Z","submitted_at":"2011-11-23T12:21:33Z","title":"Directed Steiner Tree and the Lasserre Hierarchy"},"reference_resolution":{"displayed":0,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":0,"verified_exact":0,"verified_fuzzy":0},"total_outbound_references":0},"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":"2026-08-15T06:32:42.880941+00:00","source":"crossref"},{"observed_at":"2026-08-15T06:32:39.529945+00:00","source":"retraction_watch"}],"thesis":"As of 15 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 1 inbound Pith citation observation for arXiv:1111.5473."}