- Proceedings of the IADIS International Conference, Mobile Learning, page 249--252. (2008)
- Lecture Notes in Artificial Inelligence, Springer-Verlag, Berlin Heidelberg, (2005)
- International Journal of Artificial Intelligence in Education 16(4):353-380 (2006)
- Interaction Design And Children (2006)
- AAAI, page 1872-1873. AAAI Press, (2007)
- SAICSIT National Research and Development Seminar, Pretoria, (1995)
- IEEE Computer Graphics and Applications 19(6):51--59 (1999)
- Proceedings of the First International Conference on Practical Applications of Intelligent Agents and Multi-Agents Technology PAAM96, (1996)
- Proceedings of the First International Conference on Practical Applications of Intelligent Agents and Multi-Agents Technology PAAM96, page 837--842. London, UK, (1996)


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