Manuel Gentile Davide Taibi Luciano Seta Marco Arrigo Giovanni Fulantelli Onofrio Di Giuseppe Gaspare Novara Social Knowledge Building in a Mobile Learning Environment. 337-346 2007 conf/otm/2007-w1 OTM Workshops (1) http://dx.doi.org/10.1007/978-3-540-76888-3_56 db/conf/otm/otm2007-w1.html#GentileTSAFGN07