Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links
Paper Citation Record · LEDGER
As of 16 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 3 inbound Pith citation observations for arXiv:1909.04691.
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 2026-08-16T06:30:59.297886+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-08-14T15:12:27.996873Z
A source-named dated measurement, never combined with another source.
Source: arxiv_reference, observed 2026-05-12T01:31:23.558869Z
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 db832b93-557f-4666-999f-09bce93cad0a · inbound
Strong Gravitational Lensing for Photon Coupled to Weyl Tensor in Kiselev Black Hole Strong-field gravitational lensing by black holes
Reference 53
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 54f9a6a6-830c-4e3b-b33b-8f325725e585 · inbound
Black hole spectroscopy: from theory to experiment Strong-field gravitational lensing by black holes
Reference 242
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation cf91ee4e-3eaa-40ee-9f1c-39cec2b9435a · inbound
Gravitational Lensing of Gravitational Waves: Towards a Higher-order Geometric-optics Approach Strong-field gravitational lensing by black holes
Reference 88
Source-reported events for the cited work
Unavailable: canonical work link unavailable.