Sybren Deelstra Marco Sinnema Jan Bosch Experiences in Software Product Families: Problems and Issues During Product Derivation. 165-182 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3154&spage=165 2004 conf/splc/2004 SPLC db/conf/splc/splc2004.html#DeelstraSB04