Ioannis Fikouras Eugen Freiter Service Discovery and Orchestration for Distributed Service Repositories. 59-74 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2910&spage=59 2003 conf/icsoc/2003 ICSOC db/conf/icsoc/icsoc2003.html#FikourasF03