%0 Conference Paper %1 DBLP:conf/esws/LukasiewiczS06 %A Lukasiewicz, Thomas %A Schellhase, Jörg %B ESWC %D 2006 %K web proceedings 2006 and reason eswc rules european conference semantic %P 288-302 %T Variable-Strength Conditional Preferences for Ranking Objects in Ontologies.