Antonio Fini Andreas Robert Formiconi Alessandro Giorni Nuccia Silvana Pirruccello Elisa Spadavecchia Emanuela Zibordi Open Education and Virtual Communities: an Experience. 2008 Knowledge Construction in E-learning Context http://ceur-ws.org/Vol-398/FiniEtAl.pdf conf/socrates/2008kcec db/conf/socrates/kcec2008.html#FiniFGPSZ08