Miaomiao Zhang Dang Van Hung Zhiming Liu Verification of Linear Duration Invariants by Model Checking CTL Properties. 395-409 2008 ICTAC http://dx.doi.org/10.1007/978-3-540-85762-4_27 conf/ictac/2008 db/conf/ictac/ictac2008.html#ZhangHL08