Vladimir Kolovski Bijan Parsia Yarden Katz James A. Hendler Representing Web Service Policies in OWL-DL. 461-475 2005 conf/semweb/2005 International Semantic Web Conference http://dx.doi.org/10.1007/11574620_34 db/conf/semweb/iswc2005.html#KolovskiPKH05