Detectability and Comprehensibility Study on Audio Hyperlinking Methods. - Qian Ying Wang; MoWei Shen; RenDe Shui; Hui Su (INTERACT, 2001)

Guidelines for multimodal user interface design. - Leah Reeves; Jennifer C. Lai; James A. Larson; Sharon L. Oviatt; T. S. Balaji; Stéphanie Buisine; Penny Collings; Philip R. Cohen; Ben Kraal; Jean-Claude Martin; Michael F. McTear; T. V. Raman 001; et al. (Commun. ACM, 2004)