Wilfried Lemahieu Monique Snoeck Cindy Michiels Frank G. Goethals Guido Dedene Jacques Vandenbulcke Event Based Web Service Description and Coordination. 120-133 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3095&spage=120 2003 conf/wes/2003 WES db/conf/wes/wes2003.html#LemahieuSMGDV03