Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T15:19:49.618640Z
Paper Citation Record · LEDGER
Extreme Low-Frequency Ultrathin Acoustic Absorbing Metasurface
As of 16 August 2026, this Paper Citation Record lists 4 of 4 outbound references and 0 inbound Pith citation observations for arXiv:1908.01495.
A citation records a reference. It does not transfer a finding from one paper to another.
Coverage vector
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
Reference resolution
4 of 4 outbound references displayed
- verified exact1
- verified fuzzy1
- unresolved2
- parse uncertain0
- malformed identifier0
- metadata mismatch0
External citation measurements
No source-named external measurement is stored.
Outbound references
Observation 1396c00f-c41a-4cb2-9068-82c366c85afe · outbound
This paper cites an unresolved cited work.
Extreme Low-Frequency Ultrathin Acoustic Absorbing Metasurface Unresolved cited work
Reference 5
- Resolution
- unresolved
- raw_fallback, observed 2026-08-14T15:19:49.881252Z
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 03f6989a-e012-4e2b-b93b-6fa0578acb8a · outbound
This paper cites I., & Cummer, S.
Extreme Low-Frequency Ultrathin Acoustic Absorbing Metasurface I., & Cummer, S
Reference 15
- Resolution
- verified fuzzy
- raw_fallback, observed 2026-08-14T15:19:49.847266Z
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 153d8034-e0c7-4306-93ba-b3c81d9073b3 · outbound
This paper cites Broadband ultra-thin acoustic metasurface absorber.
Extreme Low-Frequency Ultrathin Acoustic Absorbing Metasurface Broadband ultra-thin acoustic metasurface absorber
Reference 24
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:19:49.735710Z
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 2025ca7f-4083-448a-8d2c-f47930f69d49 · outbound
This paper cites an unresolved cited work.
Extreme Low-Frequency Ultrathin Acoustic Absorbing Metasurface Unresolved cited work
Reference 33
- Resolution
- unresolved
- raw_fallback, observed 2026-08-14T15:19:49.812337Z
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.
Pith citing papers
No inbound Pith citation observations are available.