Subhasis Thakur Guido Governatori Vineet Padmanabhan Jenny Eriksson Lundström Dialogue Games in Defeasible Logic. 497-506 2007 conf/ausai/2007 Australian Conference on Artificial Intelligence http://dx.doi.org/10.1007/978-3-540-76928-6_51 db/conf/ausai/ausai2007.html#ThakurGPL07