Resolver uses CrossRef, PubMed, JSTOR, and local cache to locate an article. The cache currently has 151222 articles.
You can resolve identifiers such as DOIs by adding them to the URL bioguid.info/openurl/, for example:
http://bioguid.info/doi:10.1016/j.ympev.2006.06.014By default the resolver returns HTML, but you can append "&display=json" or ""&display=rdf" to the OpenURL query to change the output to either JSON or RDF. For example:
http://bioguid.info/openurl?genre=article&title=Molecular Phylogenetics and Evolution&volume=42&spage=157&display=json returns JSONand
http://bioguid.info/openurl?genre=article&title=Molecular Phylogenetics and Evolution&volume=42&spage=157&display=rdf returns RDF.Data browsers such as Zitgist will retrieve RDF automatically, for example:
http://bioguid.info/doi:10.1016/j.ympev.2006.06.014