Juha Savolainen Juha Kuusela Mike Mannion Tuomo Vehkomäki Combining Different Product Line Models to Balance Needs of Product Differentiation and Reuse. 116-129 2008 ICSR http://dx.doi.org/10.1007/978-3-540-68073-4_11 conf/icsr/2008 db/conf/icsr/icsr2008.html#SavolainenKMV08