Christian Tischer Andreas Müller Markus Ketterer Lars Geyer Why does it take that long? Establishing Product Lines in the Automotive Domain. 269-274 2007 SPLC http://doi.ieeecomputersociety.org/10.1109/SPLINE.2007.20 conf/splc/2007 db/conf/splc/splc2007.html#TischerMKG07