In: Telematika 2004. Conference on communication infrastructure and telematics for cities, municipalities and regions of the Czech Republic (Telematika), Moskow, 2004.
In: Alexandra Cristea; Franca Garzotto (Hrsg.). Proceedings of the Second International Workshop on Authoring Adaptive and Adaptable Educational Hypermedia, AH-2004: Workshop Proceedings, Part II, CS-Report 04-19. Augmented Human International Conference (AH-2004), Pages 455-460, Technische Universiteit Eindhoven, 2004.
In: M.P. Bonacina; T. Boy de la Tour (Hrsg.). Proceedings of Workshop ``Strategies in Automated Deduction'' at the Second International Joint Conference on Automated Reasoning (IJCAR2004). International Joint Conference on Automated Reasoning (IJCAR), Cork, Pages 93-105, 7/2004.
In: Cognition and Exploratory Learning in the Digital Age (CELDA). IADIS International Conference Cognition and Exploratory Learning in Digital Age (CELDA), Lisabon, 2004.
In: J. Lester; R. Vicari; F. Paraguacu (Hrsg.). International Conference on Intelligent Tutoring Systems. International Conference on Intelligent Tutoring Systems (ITS), Pages 762-771, LNCS, No. 3220, Springer, 2004.
In: A. Asperti; G. Bancerek; A. Trybulec (Hrsg.). Proceedings of Third International Conference on Mathematical Knowledge Management (MKM2004). International Conference on Mathematical Knowledge Management (MKM), Bialowieza, Pages 251-264, LNCS, No. 3119, Springer, 9/2004.
In: G. Marks (Hrsg.). Proceedings of the World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education (eLearn-2004). World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education (eLearn-2004), 2004.