Birgit Geppert Charles W. Krueger J. Jenny Li SPLiT - Workshop on Software Product Line Testing. 325-326 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3154&spage=325 2004 conf/splc/2004 SPLC db/conf/splc/splc2004.html#GeppertKL04