Luciano Seta Manuel Gentile Davide Taibi Marco Arrigo Giovanni Fulantelli Gaspare Novara Onofrio Di Giuseppe Multimodality in a Mobile Learning Environment. 160-165 2008 DEXA Workshops http://doi.ieeecomputersociety.org/10.1109/DEXA.2008.66 conf/dexaw/2008 db/conf/dexaw/dexaw2008.html#SetaGTAFNG08