- DASC, page 266-269. IEEE, (2009)
- Natural Language Engineering 12(2):131-144 (2006)
- Encyclopedia of Artificial Intelligence, IGI Global, (2009)
- MAICS, volume 710 of CEUR Workshop Proceedings, page 23-29. CEUR-WS.org, (2011)
- IEEE Transactions on Systems, Man, and Cybernetics, Part C 29(1):15-25 (1999)
- IGARSS, page 1445-1448. IEEE, (2011)
- ACII 2, volume 6975 of Lecture Notes in Computer Science, page 311-312. Springer, (2011)
- AIED, volume 125 of Frontiers in Artificial Intelligence and Applications, page 985. IOS Press, (2005)
- (2003)
- Intelligent Tutoring Systems, volume 3220 of Lecture Notes in Computer Science, page 501-510. Springer, (2004)
- Intelligent Tutoring Systems, volume 3220 of Lecture Notes in Computer Science, page 908. Springer, (2004)
- Workshop on Dialog-Based Intelligent Tutoring Systems: State of the Art and New Research Directions.Intelligent Tutoring Systems, volume 3220 of Lecture Notes in Computer Science, page 914. Springer, (2004)
- Intelligent Tutoring Systems, volume 3220 of Lecture Notes in Computer Science, page 423-431. Springer, (2004)
- In Proceedings of the AIED 2003 Workshop on Tutorial Dialogue Systems: With a View Towards the Classroom, (2003)
- AMKM, volume 2926 of Lecture Notes in Computer Science, page 48-56. Springer, (2003)
- Cognitive Science: A Multidisciplinary Journal (February 2006)
- AI Mag. (October 2001)
- User Modeling, volume 2702 of Lecture Notes in Computer Science, page 368-372. Springer, (2003)
- Discourse Processes: A multidisciplinary journal 45(4):298--322 (July 2008)
- Intelligent Tutoring Systems, volume 2363 of Lecture Notes in Computer Science, page 821-830. Springer, (2002)


author