Unresolvable Identifier

arXiv:2605.19543 · detector doi_compliance · cross_source · 2026-05-20 04:08:51.536059+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1016/j.ejc.2004.05.010' 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. Hubička and J. Nešetřil. Universal partial order represented by means of oriented trees and other simple graphs.European Journal of Combinatorics, 26(5):765–778, 2005. doi: 10.1016/j.ejc.2004.05.010

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1016/j.ejc.2004.05.010",
  "raw_excerpt": "J. Hubi\u010dka and J. Ne\u0161et\u0159il. Universal partial order represented by means of oriented trees and other simple graphs.European Journal of Combinatorics, 26(5):765\u2013778, 2005. doi: 10.1016/j.ejc.2004.05.010",
  "ref_index": 14,
  "verdict_class": "cross_source"
}