Pierre America Eelco Rommes J. Henk Obbink Multi-view Variation Modeling for Scenario Analysis. 44-65 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3014&spage=44 2003 conf/pfe/2003 PFE db/conf/pfe/pfe2003.html#AmericaRO03