Timothy W. Bickmore. Towards the design of multimodal interfaces for handheld conversational characters. In Loren G. Terveen, Dennis R. Wixon, editors, Extended abstracts of the 2002 Conference on Human Factors in Computing Systems, CHI 2002, Minneapolis, Minnesota, USA, April 20-25, 2002. pages 788-789, ACM, 2002. [doi]
Abstract is missing.