Andrea Omicini Michele Piunti Alessandro Ricci Mirko Viroli Agents, Intelligence and Tools. 157-173 2009 Artificial Intelligence: An International Perspective http://dx.doi.org/10.1007/978-3-642-03226-4_9 series/lncs/5640 db/series/lncs/lncs5640.html#OmiciniPRV09