Barbara Rita Barricelli Andrea Marcante Piero Mussio Loredana Parasiliti Provenza Marco Padula Paolo Luigi Scala A Design Methodology for Multimodal Interactive Systems: A Pragmatical Approach. 142-149 2008 DEXA Workshops http://doi.ieeecomputersociety.org/10.1109/DEXA.2008.62 conf/dexaw/2008 db/conf/dexaw/dexaw2008.html#BarricelliMMPPS08