If you have a bibtex file open, run M-x org-ref-build-full-bibliography
which should make a pdf of the entries.
There isn't a super simple way to filter them right now. The way to do that
is use org-ref to add the citations you want in an org file, and then run
M-x org-ref-extract-bibtex-to-file,
I'm successfully using org-ref to create bibliographic entries and
citations in my lectures and syllabi, using ox-hugo and org-re-reveal, and
of late also citeproc-orgref. It's great. Now I'd like to add a
"bibliography' page to my course websites, which provides a long list of
works that students
