Unresolvable Identifier
critical
doi_compliance
unresolvable_identifier
Identifier '10.1093/ptep/ptaa1142' 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
Mei, J., Bai, Y .-Z., Bao, J., et al. 2021, Progress of Theoretical and Experimental Physics, 2021, 05A107, doi:10.1093/ptep/ptaa1142, 7
Evidence payload
{
"arxiv_id": null,
"checked_sources": [
"crossref_by_doi",
"openalex_by_doi",
"doi_org_head"
],
"doi": "10.1093/ptep/ptaa1142",
"raw_excerpt": "Mei, J., Bai, Y .-Z., Bao, J., et al. 2021, Progress of Theoretical and Experimental Physics, 2021, 05A107, doi:10.1093/ptep/ptaa1142, 7",
"ref_index": 181,
"verdict_class": "cross_source"
}