Unresolvable Identifier

arXiv:2604.22342 · detector doi_compliance · cross_source · 2026-05-20 00:05:09.401349+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1016/c2009-0-22516-5' 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

Gradshteyn I S and Ryzhik I M 2007Table of integrals, series, and products(Elsevier Academic Press) (doi: https://doi.org/10.1016/C2009-0-22516-5)

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1016/c2009-0-22516-5",
  "raw_excerpt": "Gradshteyn I S and Ryzhik I M 2007Table of integrals, series, and products(Elsevier Academic Press) (doi: https://doi.org/10.1016/C2009-0-22516-5)",
  "ref_index": 35,
  "verdict_class": "cross_source"
}