Unresolvable Identifier

arXiv:2604.21419 · detector doi_compliance · cross_source · 2026-05-20 00:58:11.541308+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1134/s1063772923070128' 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

Kim, C. M., & Kim, S. P. 2023a, European Physical Journal C, 83, 104 —. 2023b, Astronomy Reports, 67, S122, doi: 10.1134/S1063772923070128

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1134/s1063772923070128",
  "raw_excerpt": "Kim, C. M., & Kim, S. P. 2023a, European Physical Journal C, 83, 104 \u2014. 2023b, Astronomy Reports, 67, S122, doi: 10.1134/S1063772923070128",
  "ref_index": 14,
  "verdict_class": "cross_source"
}