Junwei Du Zhongwei Xu Meng Mei Verification of Scenario-Based Safety Requirement Specification on Components Composition. 686-689 2008 CSSE (2) http://dx.doi.org/10.1109/CSSE.2008.1048 conf/csse/2008-2 db/conf/csse/csse2008-2.html#JunweiZM08