Bart Verheij A Labeling Approach to the Computation of Credulous Acceptance in Argumentation. 623-628 2007 conf/ijcai/2007 IJCAI http://dli.iiit.ac.in/ijcai/IJCAI-2007/PDF/IJCAI07-099.pdf db/conf/ijcai/ijcai2007.html#Verheij07