Fernando Bobillo Miguel Delgado Juan Gómez-Romero An Ontology Design Pattern for Representing Relevance in OWL. 72-85 2007 conf/semweb/2007 ISWC/ASWC http://dx.doi.org/10.1007/978-3-540-76298-0_6 db/conf/semweb/iswc2007.html#BobilloDG07