Ignacio D. Viglizzo Fernando A. Tohmé Guillermo Ricardo Simari An Alternative Foundation for DeLP: Defeating Relations and Truth Values. 42-57 2008 conf/foiks/2008 FoIKS http://dx.doi.org/10.1007/978-3-540-77684-0_6 db/conf/foiks/foiks2008.html#ViglizzoTS08