Alessio Lomuscio Charles Pecheur Franco Raimondi Automatic Verification of Knowledge and Time with NuSMV. 1384-1389 2007 conf/ijcai/2007 IJCAI http://dli.iiit.ac.in/ijcai/IJCAI-2007/PDF/IJCAI07-223.pdf db/conf/ijcai/ijcai2007.html#LomuscioPR07