[cpbotha]

I think what your OP was referring to is not adding a citation to a document that you're editing, but rather ingesting PDFs and bibliographic data from the web.

I love Emacs (not as much as you do it seems ;) but Zotero is amazing for ingesting academic references including fulltext and bibliographic data from the web. One click of a button in your browser, and everything is ready to read and cite.

(Source: Wrote quite a number of papers and co-authored one textbook, all using Zotero. My workflow was Zotero for ingestion -> per-publication bibtex files for authoring)

[nanna]

Aha, apologies, my misunderstanding. Looks like I got a bit emaxcited 8)

So either you add them manually or you query Crossref, arXiv, DBLP or HAL (French open archive) within emacs and then can copy their bibtex entry from there. No pdf or web reference importer as far as I'm aware. Yet!