M. Araki, and Y. Funakura. Spoken Dialogue Systems for Ambient Environments: Second International Workshop, IWSDS 2010, Gotemba, Shizuoka, Japan, volume 6392 of Lecture Notes in Artificial Intelligence, Springer, Berlin, (2010)
R. Pieraccini, and J. Huerta. Recent Trends in Discourse and Dialogue, volume 39 of Text, Speech and Language Technology, chapter 1, Springer, Dordrecht, (2008)
R. Pieraccini, and D. Lubensky. Innovations in Applied Artificial Intelligence: 18th International Conference on Industrial and Engineering Applications of Artificial Intelligence and Expert Systems, IEA/AIE 2005, Bari, Italy, volume 3533 of Lecture Notes in Artificial Intelligence, Springer, Berlin, (2005)