I had posted here before about 'reference books' listed in an AI written paper that were not real books. They were references CREATED by AI to provide 'proof' and 'further information' on an AI written article.
The Canadian professor found footnote references used in AI 'academic' papers turned in by students had the same 'tell'. The references listed as 'sources' were totally fake.
He said he now simply looks up a few of the footnote references and can quickly determine which students used AI rather than writing their own papers.
I think it's funny - a system designed to be so 'real' it tries to create an illusion of reality. And a human smart enough to figure it out.