- EC-TEL, volume 6964 of Lecture Notes in Computer Science, page 166-180. Springer, (2011)
- 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 913. Springer, (2004)
- TIDSE, volume 3105 of Lecture Notes in Computer Science, page 36-41. Springer, (2004)
- Intelligent Tutoring Systems, volume 2363 of Lecture Notes in Computer Science, page 432-441. Springer, (2002)
- International Conference on Virtual Storytelling, volume 2197 of Lecture Notes in Computer Science, page 127-134. Springer, (2001)
- User Modeling, volume 2109 of Lecture Notes in Computer Science, page 148-157. Springer, (2001)
- Intelligent Tutoring Systems, volume 1452 of Lecture Notes in Computer Science, page 606. Springer, (1998)
- Intelligent Tutoring Systems, volume 1452 of Lecture Notes in Computer Science, page 314-323. Springer, (1998)
- AIED, volume 6738 of Lecture Notes in Computer Science, page 632. Springer, (2011)
- User Model. User-Adapt. Interact. 5(1):45-65 (1995)
- Artif. Intell. Rev. 15(1/2):115-134 (2001)
- (2000)
- page 127-134. (2001)
- I. J. Artificial Intelligence in Education 15(1):1-2 (2005)
- I. J. Artificial Intelligence in Education 13(2-4):157 (2003)
- I. J. Artificial Intelligence in Education 17(3):305-338 (2007)
- Who Helps the Helper? A Situated Scaffolding System for Supporting Less Experienced Feedback Givers.AIED, volume 125 of Frontiers in Artificial Intelligence and Applications, page 851-853. IOS Press, (2005)
- AIED, volume 158 of Frontiers in Artificial Intelligence and Applications, page 593-595. IOS Press, (2007)
- New Directions in Intelligent Interactive Multimedia, volume 142 of Studies in Computational Intelligence, Springer, (2008)


author