Thanks for this. Just a quick follow-up: if I use the same reference in different papers, do I need to make those changes we were discussing on each per-paper json file, or is there a way to do them once and for all?
Well, you can use the same json file for multiple documents.
By default it will be stored in the directory from which pandoc is invoked, but you can also change that by setting `url2cite-cache: filename` in the markdown frontmatter or in the pandoc invocation: `pandoc -M url2cite-cache=../bla.json --filter ...`.
