Unresolvable Identifier

arXiv:2604.20618 · detector doi_compliance · cross_source · 2026-05-20 01:46:09.678529+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1016/0370-2693(87' 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

Lipkin, H.J.: New possibilities for exotic hadrons — anticharmed strange baryons. Physics Letters B 195(3), 484–488 (1987) https://doi.org/10.1016/0370-2693(87) 90055-4

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1016/0370-2693(87",
  "raw_excerpt": "Lipkin, H.J.: New possibilities for exotic hadrons \u2014 anticharmed strange baryons. Physics Letters B 195(3), 484\u2013488 (1987) https://doi.org/10.1016/0370-2693(87) 90055-4",
  "ref_index": 5,
  "verdict_class": "cross_source"
}