A. Pappu, M. Sun, S. Sridharan, and A. Rudnicky. Human-Computer Interaction: Interaction Modalities and Techniques, 5th International Conference, HCI International 2013, Las Vegas, NV, USA, Proceedings, Part IV, volume 8007 of Lecture Notes in Computer Science, Springer, Heidelberg, (2013)
Y. Wang, and S. Hamerich. Recent Trends in Discourse and Dialogue, volume 39 of Text, Speech and Language Technology, chapter 2, Springer, Dordrecht, (2008)
R. Pieraccini, and J. Huerta. Recent Trends in Discourse and Dialogue, volume 39 of Text, Speech and Language Technology, chapter 1, Springer, Dordrecht, (2008)