1. AI R&D Lab., Institute for Computer Science and Engineering (ICIC), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Alem 1253, (B8000CPB), Bahía Blanca Bs. As., Argentina. E-mails: cadd@cs.uns.edu.ar, sef@cs.uns.edu.ar, sg@cs.uns.edu.ar, mfalappa@cs.uns.edu.ar, cic@cs.uns.edu.ar, grs@cs.uns.edu.ar
2. Agents and Intelligent Systems Area, Faculty of Management Sciences, Universidad Nacional de Entre Ríos, Tavella 1424, Concordia E. R., Argentina