1. Bernstein, J., Cohen, M., Murveit, H., Rtischev, D., Weintraub, M., 1990. Automatic evaluation and training in English pronunciation. In: Proceedings ICSLP-90, Kobe, Japan
2. Bilange, E., 1991. A task independent oral dialogue model. In: Fifth Conference of the European Chapter of the Association for Computational Linguistics, Berlin
3. Dahlback, N., Jonsson, A., 1992. An empirically based computationally tractable dialogue model. In: Proceedings of the 14th Annual Meeting of Cognitive Science Society, Bloomington, Indiana, pp. 785–790
4. Ehsani, F., Bernstein, J., Najmi, A., Todic, O., 1997. Subarashii: Japanese interactive spoken language education. In: European Conference on Speech Communication and Technology, pp. 681–684
5. Jordan, E.H., Nahdi, M., 1987. Japanese: The Spoken Language, Parts I, II, III. Yale University Press, New Haven, CT