Unresolvable Identifier

arXiv:2605.18477 · detector doi_compliance · cross_source · 2026-05-20 02:27:43.440308+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1109/lgrs.2021.3066106' 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

doi:10.1109/LGRS.2021.3066106

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1109/lgrs.2021.3066106",
  "raw_excerpt": "doi:10.1109/LGRS.2021.3066106",
  "ref_index": 39,
  "verdict_class": "cross_source"
}