Unresolvable Identifier

arXiv:2605.04605 · detector doi_compliance · cross_source · 2026-05-19 14:18:48.452328+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1016/j.energy.2021' 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

K. L¨ ofﬂer et al. “Chances and barriers for Germany’s low carbon transition – Quantifying uncertainties in key inﬂuential factors”. In: Energy 239 (2022), p. 121901. DOI : 10.1016/j.energy.2021

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1016/j.energy.2021",
  "raw_excerpt": "K. L\u00a8 of\ufb02er et al. \u201cChances and barriers for Germany\u2019s low carbon transition \u2013 Quantifying uncertainties in key in\ufb02uential factors\u201d. In: Energy 239 (2022), p. 121901. DOI : 10.1016/j.energy.2021",
  "ref_index": 3,
  "verdict_class": "cross_source"
}