Ana Cristina Bicharra Garcia Anderson Lopes Cristiana Bentes Electronic Auction with autonomous intelligent agents: Finding opportunities by being there. 45-52 2001 5 13 Inteligencia Artificial, Revista Iberoamericana de Inteligencia Artificial http://polar.lsi.uned.es/revista/index.php/ia/article/view/307 db/journals/aepia/aepia13.html#GarciaLB01