Unresolvable Identifier

arXiv:2605.15432 · detector doi_compliance · cross_source · 2026-05-19 15:10:57.493310+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1007/978-1-4614-7163-5' 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

Murtagh, F., & Heck, A. 2012, Multivariate Data Analysis, 4th edn., Springer Series in Statistics (Springer Science & Business Media), doi: 10.1007/978-1-4614-7163-5

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1007/978-1-4614-7163-5",
  "raw_excerpt": "Murtagh, F., & Heck, A. 2012, Multivariate Data Analysis, 4th edn., Springer Series in Statistics (Springer Science & Business Media), doi: 10.1007/978-1-4614-7163-5",
  "ref_index": 17,
  "verdict_class": "cross_source"
}