You can reproduce the problem with doi:10.1145/3589263 1. BibTeX generated by crossref.org has a protected term in the journal field: `{ACM}` ```sh $ curl http://api.crossref.org/works/10.1145/3589263/transform/application/x-bibtex ``` ```bibtex @article{Kuschewski_2023, ... journal = {Proceedings of the {ACM} on Management of Data} } ``` 2. Because of that, the regular expression to replace the journal field with the abbreviated name fails: https://github.com/bibcure/doi2bib/blob/master/doi2bib/crossref.py#L91 3. In effect, the BibTeX produced by doi2bib has this malformed line: ```bibtex @article{Kuschewski_2023, ... journal = {Proc. ACM Manag. Data} on Management of Data} } ``` 4. In the end, `bibtexparser` recognizes the whole section as a comment and not an `@article`