Perform a literature search using the EBI's CiteXplore service (http://www.ebi.ac.uk/citexplore/), and get the results in a minimal XML format containing the citation information (i.e. title, author, journal, etc.), the identifier of the citation in the source database (PubMed/Medline, Agricola, Patent Abstracts, CBA, CiteSeer, etc.) and information about abstract and full article availablity including URLs.