S. Tucker, and S. Whittaker. IUI '09: Proceedingsc of the 13th international conference on Intelligent user interfaces, page 37--46. New York, NY, USA, ACM, (2008)
S. Whittaker, and C. Sidner. CHI '96: Proceedings of the SIGCHI conference on Human factors in computing systems, page 276--283. New York, NY, USA, ACM, (1996)
S. Whittaker, and C. Sidner. CHI '96: Proceedings of the SIGCHI conference on Human factors in computing systems, page 276--283. New York, NY, USA, ACM, (1996)