Michael Ryba Gerhard Wickler Managing Ad Hoc Virtual Enterprises in Open SME Networks: The SCOOP Solution. 456-467 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3292&spage=456 2004 conf/otm/2004 OTM Workshops db/conf/otm/otm2004.html#RybaW04