Georg Gottlob Gianluigi Greco Toni Mancini Complexity of Pure Equilibria in Bayesian Games. 1294-1299 2007 conf/ijcai/2007 IJCAI http://dli.iiit.ac.in/ijcai/IJCAI-2007/PDF/IJCAI07-209.pdf db/conf/ijcai/ijcai2007.html#GottlobGM07a