Kai Engelhardt Peter Gammie Ron van der Meyden Model Checking Knowledge and Linear Time: PSPACE Cases. 195-211 2007 conf/lfcs/2007 LFCS http://dx.doi.org/10.1007/978-3-540-72734-7_14 db/conf/lfcs/lfcs2007.html#EngelhardtGM07