Guys, thank you very much for your responses to my previous query. (I will study the ebib package more closely; as of now it does not seem to work with the file fields in my Mendeley-created .bib file. (Yes, I promise will stop using Mendeley.))
I wanted to try the two LaTeX export processors mentioned in the 15.2 section of the manual: natbib and biblatex. My .org file has a #+bibliography line specifying my .bib (which is correct, since inserting citations is now working). I put both (use-package oc-natbib) and (use-package oc-biblatex) in my .emacs . (I've used natbib for years when writing .tex documents; I don't know biblatex.) The situation is as follows: -- if I put #+cite_export: natbib at the beginning of my .org file, then C-c C-e l L gives me a LaTeX file which does *not* specify the .bib file; it has \citep{} commands where they should be, but of course bibtex doesn't know what to do with them; -- if I use #+cite_export: biblatex instead, then the resulting .tex file does contain the \addbibresource{} line pointing to my .bib , and \autocite{} commands where citations should be; however, I simply cannot get this to work: Biber works alright, but eventually pdflatex gives me the following error: -------------- ERROR: LaTeX3 Error: Mismatched LaTeX support files detected. --- TeX said --- (LaTeX3) Loading 'l3backend-pdftex.def' aborted! (LaTeX3) (LaTeX3) The L3 programming layer in the LaTeX format (LaTeX3) is dated 2021-01-09, but in your TeX tree the files require (LaTeX3) at least 2021-02-18. --------------- which I'm unable to get rid of. (This is of course not a question for this group but if anyone had similar problems I'd be grateful for pointers ;-); fmtutil-sys --all and fmtutil-user --all did nothing to alleviate this) So: I'd really like to keep using natbib and make it somehow insert the information about the .bib file into the .tex when exporting. How do I do that? Thank you again for your help! Best regards, Leszek.