Andrzej Uszok Jeffrey M. Bradshaw Renia Jeffers Austin Tate Jeff Dalton Applying KAoS Services to Ensure Policy Compliance for Semantic Web Services Workflow Composition and Enactment. 425-440 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3298&spage=425 2004 conf/semweb/2004 International Semantic Web Conference db/conf/semweb/iswc2004.html#UszokBJTD04