Javier Portillo-Rodríguez Aurora Vizcaíno Juan Pablo Soto Mario Piattini Gabriela N. Aranda Fostering Knowledge Exchange in Virtual Communities by Using Agents. 32-39 2007 conf/criwg/2007 CRIWG http://dx.doi.org/10.1007/978-3-540-74812-0_3 db/conf/criwg/criwg2007.html#Portillo-RodriguezVSPA07