Michael Czajkowski Anna L. Buczak Martin O. Hofmann Dynamic Agent Composition from Semantic Web Services. 27-40 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3372&spage=27 2004 conf/semweb/2004swdb SWDB db/conf/semweb/swdb2004.html#CzajkowskiBH04