Unresolvable Identifier

arXiv:2604.22975 · detector doi_compliance · cross_source · 2026-05-19 23:35:20.711339+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1007/978-3-540-88055-434' 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

Lodders, K., Palme, H., & Gail, H. P. 2009, Landolt B¨ ornstein, 4B, 712, doi: 10.1007/978-3-540-88055-434

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1007/978-3-540-88055-434",
  "raw_excerpt": "Lodders, K., Palme, H., & Gail, H. P. 2009, Landolt B\u00a8 ornstein, 4B, 712, doi: 10.1007/978-3-540-88055-434",
  "ref_index": 19,
  "verdict_class": "cross_source"
}