I have a list of articles, including their PubMed IDs. I would like to programmatically retrieve the citations of a given article through a web service.
PubMed comes close, but only gives me a list of articles that cite a given article. (This is the opposite direction I want to go.) It can also give me a list of related articles, but this isn't what I'm interested in.
Thomson Reuters' Web of Science website comes close, but when I try to use their web service, I get this error: "The Web Service (version 2.0) has been retired permanently." Moreover, when I try to look at their web services page, I get a 404.