Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links
Paper Citation Record · LEDGER
As of 15 July 2026, this Paper Citation Record lists 0 of 0 outbound references and 1 inbound Pith citation observation for arXiv:1903.09539.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-07-15T06:30:58.975436+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-05-12T11:26:30.318903Z
A source-named dated measurement, never combined with another source.
Source: arxiv_reference, observed 2026-05-12T11:26:30.422731Z
0 of 0 outbound references displayed
External citation measurements
No source-named external measurement is stored.
No outbound reference observations are available for this paper version.
Observation 6795a89d-31eb-4096-9ec4-1901fd0226aa · inbound
First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole Imaging Black Holes and Jets with a VLBI Array Including Multiple Space-Based Telescopes
Reference 58
Source-reported events for the cited work
No event found in the named queried sources as of 2026-07-15T06:30:58.975436+00:00.