Unresolvable Identifier

arXiv:2605.17199 · detector doi_compliance · cross_source · 2026-05-20 13:44:24.381165+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1073/pnas.86.4.1388.url:http://dx.doi.org/10.1073/pnas.86.4.1388' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.

Paper page Integrity report arXiv Try DOI

Evidence text

J R Krebs, D F Sherry, S D Healy, V H Perry, and A L Vaccarino. “Hippocampal specialization of food-storing birds.” In:Proceedings of the National Academy of Sciences86.4 (Feb. 1989), pp. 1388–1392.issn: 1091-6490.doi: 10.1073/pnas.86.4.1388.url:http://dx.doi.org/10.1073/pnas.86.4.1388

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1073/pnas.86.4.1388.url:http://dx.doi.org/10.1073/pnas.86.4.1388",
  "raw_excerpt": "J R Krebs, D F Sherry, S D Healy, V H Perry, and A L Vaccarino. \u201cHippocampal specialization of food-storing birds.\u201d In:Proceedings of the National Academy of Sciences86.4 (Feb. 1989), pp. 1388\u20131392.issn: 1091-6490.doi: 10.1073/pnas.86.4.1388.url:http://dx.doi.org/10.1073/pnas.86.4.1388",
  "ref_index": 38,
  "verdict_class": "cross_source"
}