BioPortal: Ontologies and Integrated Data Resources at the Click of a MousePatricia L. Whetzel, Mark A. Musen, Chris Callendar et al.|Nature Precedings|2009Cited by 50
NCBO Annotator: Semantic Annotation of Biomedical DataClément Jonquet, Margaret‐Anne Storey, Mark A. Musen et al.|HAL (Le Centre pour la Communication Scientifique Directe)|2009Cited by 47