Unresolvable Identifier

arXiv:2604.24356 · detector doi_compliance · cross_source · 2026-05-19 22:14:09.933088+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1016/0304-3975(94' 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:10.1016/0304-3975(94) 00147-B. 19 Manuel L. Campagnolo.Computational complexity of real valued recursive functions and analog circuits. Thèse de doctorat, IST, Universidade Técnica de Lisboa,

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1016/0304-3975(94",
  "raw_excerpt": "doi:10.1016/0304-3975(94) 00147-B. 19 Manuel L. Campagnolo.Computational complexity of real valued recursive functions and analog circuits. Th\u00e8se de doctorat, IST, Universidade T\u00e9cnica de Lisboa,",
  "ref_index": 12,
  "verdict_class": "cross_source"
}