Reinhard Pichler Stefan Rümmele Stefan Woltran Belief Revision with Bounded Treewidth. 250-263 2009 LPNMR http://dx.doi.org/10.1007/978-3-642-04238-6_22 conf/lpnmr/2009 db/conf/lpnmr/lpnmr2009.html#PichlerRW09