Pengfei Ye Xin Peng Yinxing Xue Stan Jarzabek A Case Study of Variation Mechanism in an Industrial Product Line. 126-136 2009 ICSR http://dx.doi.org/10.1007/978-3-642-04211-9_13 conf/icsr/2009 db/conf/icsr/icsr2009.html#YePXJ09