James A. Larson, Sharon L. Oviatt. Principles for mujltimodal user inteface desgin. In Gilbert Cockton, Panu Korhonen, editors, Extended abstracts of the 2003 Conference on Human Factors in Computing Systems, CHI 2003, Ft. Lauderdale, Florida, USA, April 5-10, 2003. pages 1058-1059, ACM, 2003. [doi]
Abstract is missing.