WARNING: Citation should include a link to the reference

[stc04003]

The warning message is caused by check_bib_doi(). Within the function, read_bib() is called to extract the BibTeX items as a list. The fields "DOI" and "URL" are reformatted to upper case, while the checks for "doi" and "url" in bib_tbl <- ... search for lowercase versions. This leads to a case mismatch and triggers the warning.

[dicook]

@stc04003 Thanks for reporting.

I don't see this error, though. Just testing it against the sample_article, and also a test bib file without DOIs.