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:1904.04791.
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 2026-08-14T12:25:27.461136Z
A source-named dated measurement, never combined with another source.
Source: pith, observed 2026-08-11T16:34:02.555916Z
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 469a5782-0efd-4da9-b178-f1581f0ee4b3 · inbound
Line and Plane Cover Numbers Revisited Planar graphs have bounded queue-number
Reference 6
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 58687648-26ac-4f5d-a251-5e92474d2175 · inbound
Mixed Linear Layouts: Complexity, Heuristics, and Experiments Planar graphs have bounded queue-number
Reference 4
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 42f1ec5d-0728-41fd-a383-52f836c1b9b4 · inbound
Row pathwidth of complete binary trees Planar graphs have bounded queue-number
Reference 2
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.