Aleksandra Cerekovic Hung-Hsuan Huang Takuya Furukawa Yuji Yamaoka Igor S. Pandzic Toyoaki Nishida Yukiko I. Nakano Implementing a Multi-user Tour Guide System with an Embodied Conversational Agent. 7-18 2009 AMT http://dx.doi.org/10.1007/978-3-642-04875-3_7 conf/amt/2009 db/conf/amt/amt2009.html#CerekovicHFYPNN09