Unresolvable Identifier

arXiv:2605.08351 · detector doi_compliance · cross_source · 2026-05-19 11:13:21.888764+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.3389/fphy.2021.587083.url:http://dx.doi.org/10.3389/fphy.2021.587083' 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

Philipp A. H¨ ohn, Alexander R. H. Smith, and Maximilian P. E. Lock. “Equivalence of Approaches to Relational Quantum Dynamics in Relativistic Settings”. In:Frontiers in Physics9 (2021).issn: 2296- 424X.doi:10.3389/fphy.2021.587083.url:http://dx.doi.org/10.3389/fphy.2021.587083

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.3389/fphy.2021.587083.url:http://dx.doi.org/10.3389/fphy.2021.587083",
  "raw_excerpt": "Philipp A. H\u00a8 ohn, Alexander R. H. Smith, and Maximilian P. E. Lock. \u201cEquivalence of Approaches to Relational Quantum Dynamics in Relativistic Settings\u201d. In:Frontiers in Physics9 (2021).issn: 2296- 424X.doi:10.3389/fphy.2021.587083.url:http://dx.doi.org/10.3389/fphy.2021.587083",
  "ref_index": 79,
  "verdict_class": "cross_source"
}