Unresolvable Identifier

arXiv:2605.07965 · detector doi_compliance · cross_source · 2026-05-19 11:21:47.162596+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1146/annurev.aa.31.090193.00344110.1146/annurev.astro.31.1.717' 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

X-ray spectra and time variability of active galactic nuclei. , keywords =. doi:10.1146/annurev.aa.31.090193.00344110.1146/annurev.astro.31.1.717 , adsurl =

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1146/annurev.aa.31.090193.00344110.1146/annurev.astro.31.1.717",
  "raw_excerpt": "X-ray spectra and time variability of active galactic nuclei. , keywords =. doi:10.1146/annurev.aa.31.090193.00344110.1146/annurev.astro.31.1.717 , adsurl =",
  "ref_index": 109,
  "verdict_class": "cross_source"
}