James Snyder Harry Lai Shirish Reddy Jimmy Wan Software Product Line Support in Coremetrics OA2004. 18-33 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3154&spage=18 2004 conf/splc/2004 SPLC db/conf/splc/splc2004.html#SnyderLRW04