Guido Boella Silvano Colombo Tosatto Artur S. d'Avila Garcez Valerio Genovese Dino Ienco Leendert van der Torre Neural symbolic architecture for normative agents. 1203-1204 2011 AAMAS http://portal.acm.org/citation.cfm?id=2034488&CFID=69154334&CFTOKEN=45298625 conf/atal/2011 db/conf/atal/aamas2011.html#BoellaTGGIT11