Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T13:08:54.836413Z
Paper Citation Record · LEDGER
As of 16 August 2026, this Paper Citation Record lists 6 of 6 outbound references and 0 inbound Pith citation observations for arXiv:1908.05899.
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, observed 2026-08-14T13:08:54.836413Z
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
A source-named dated measurement, never combined with another source.
Source: cited_works
6 of 6 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation 687f49dc-3de8-4982-b29a-9a3879f439e4 · outbound
Challenges in Survey Research Amrhein, V., Greenland, S
Reference 1
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 8d2c3386-7245-49e1-9f79-48689e235888 · outbound
Challenges in Survey Research (2005), Designing an effective survey, Technical report, Carnegie- Mellon University, Pittsburgh, PA and Software Engineering Institute
Reference 3
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 8dd4212e-23ec-4331-8cf7-1f687e2fa383 · outbound
Challenges in Survey Research Unresolved cited work
Reference 8
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 30e0576f-074b-4de5-afad-e6de3f69f7ec · outbound
Challenges in Survey Research Unresolved cited work
Reference 20
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 20def76a-ba95-4e30-9f95-3baa983755d4 · outbound
Challenges in Survey Research Unresolved cited work
Reference 23
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 5bdf1d0e-2824-4a5a-beac-b7b224facab9 · outbound
Challenges in Survey Research Méndez Fernández, D., Wagner, S., Kalinowski, M., Schekelmann, A., Tuzcu, A., Conte, T., Spinola, R
Reference 643
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.
No inbound Pith citation observations are available.