ALIBABA: PubMed as a graph. - Conrad Plake; Torsten Schiemann; Marcus Pankalla; Jörg Hakenberg; Ulf Leser (Bioinform., 2006)

Word Sense Disambiguation in Biomedical Applications. - Torsten Schiemann; Ulf Leser; Jörg Hakenberg (Information Retrieval in Biomedicine, 2009)