In: J. Zumbach; N. Schwartz; T. Seufert; L. Lester (Hrsg.). Beyond Knowledge: The Legacy of Competence. Meaningfull Coumputer-Based Learning Environments. European Association for Research on Learning and Instruction SIG conferences (EARLI SIG-6 & 7), September 2-4, Salzburg, Australia, Pages 125-134, Springer Verlag, 6/2008.
In: Nikos Avouris; Nikos Fakotatis; Constantine D. Spyropoulos; Malik Ghallab (Hrsg.). Proceedings of 18th European Conference on Artificial Intelligence. European Conference on Artificial Intelligence (ECAI-08), 18th, July 21-25, Patras, Greece, Pages 276-280, Frontiers in Artificial Intelligence and Applications (FAIA), Vol. 178, IOS Press, 2008.