Jens Hartmann Raúl Palma York Sure María del Carmen Suárez-Figueroa Peter Haase Asunción Gómez-Pérez Rudi Studer Ontology Metadata Vocabulary and Applications. 906-915 2005 conf/otm/2005-1 OTM Workshops http://dx.doi.org/10.1007/11575863_112 db/conf/otm/otm2005-1.html#HartmannPSSHGS05