Gérard Chollet Anna Esposito Annie Gentes Patrick Horain Walid Karam Zhenbo Li Catherine Pelachaud Patrick Perrot Dijana Petrovska-Delacrétaz Dianle Zhou Leila Zouari Multimodal Human Machine Interactions in Virtual and Augmented Reality. 1-23 2008 COST 2102 School (Vietri) http://dx.doi.org/10.1007/978-3-642-00525-1_1 conf/cost/2008 db/conf/cost/cost2008.html#CholletEGHKLPPPZZ08