S. Kavaldjian. ESEC-FSE '07: Proceedings of the the 6th joint meeting of the European software engineering conference and the ACM SIGSOFT symposium on The foundations of software engineering, Seite 603--606. New York, NY, USA, ACM, (2007)
S. Oviatt, R. Coulston, und R. Lunsford. Proceedings of the 6th international conference on Multimodal interfaces, Seite 129--136. New York, NY, USA, ACM, (2004)
S. Oviatt. The Human-Computer Interaction Handbook: Fundamentals, Evolving Technologies and Emerging Applications, Kapitel Multimodal interfaces, L. Erlbaum Associates Inc., Hillsdale, NJ, USA, (2003)