Unresolvable Identifier

arXiv:2605.17339 · detector doi_compliance · cross_source · 2026-05-20 14:52:26.343294+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1145/214393.214403' 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

Liu, J. W. H.: Modification of the Minimum-Degree Algorithm by Multiple Elim- ination. ACM Transactions on Mathematical Software (TOMS)11(2), 141–153 (1985). https://doi.org/10.1145/214393.214403

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1145/214393.214403",
  "raw_excerpt": "Liu, J. W. H.: Modification of the Minimum-Degree Algorithm by Multiple Elim- ination. ACM Transactions on Mathematical Software (TOMS)11(2), 141\u2013153 (1985). https://doi.org/10.1145/214393.214403",
  "ref_index": 17,
  "verdict_class": "cross_source"
}