Mohsen Asadi Ebrahim Bagheri Dragan Gasevic Marek Hatala Bardia Mohabbati Goal-driven software product line engineering. 691-698 2011 SAC http://doi.acm.org/10.1145/1982185.1982336 conf/sac/2011 db/conf/sac/sac2011.html#AsadiBGHM11