M. Mühlenbrock. Proceedings of the Young Researcher Track at the 9th International Conference on Artificial Intelligence in Education AIED-99, , (1999)
F. Tewissen, N. Baloian, H. Hoppe, and E. Reimberg. Proceedings of 6th International Workshop on Groupware, CRIWG 2000, Madeira, Portugal, IEEE CS Press, (2000)18 - 20 October 2000.
F. Tewissen, A. Lingnau, and H. Hoppe. Lecture Notes in Computer Science 1839, Intelligent Tutoring Systems, page 252-261. Montreal, Springer, (2000)Paper submitted to ITS 2000.
K. Gaßner, and H. Hoppe. Heinz Mandl & Frank Fischer (2000): Wissen sichtbar machen, Wissensmanagement und Mapping-Techniken Göttingen: Hogrefe, (2000)
M. Jansen, N. Pinkwart, and F. Tewissen. LLWA 01 - Tagungsband der GI-Workshopwoche "Lernen-Lehren-Wissen-Adaptivität" Forschungsbericht 763, Universität Dortmund, , (2001)
F. Tewissen, A. Lingnau, H. Hoppe, G. Mannhaupt, and D. Nischk. Proceedings of the European Conference on Computer-Supported Collaborative Learning (Euro-CSCL 2001), page 593-600. Maastricht, The Netherlands, , (2001)
P. Jermann, A. Soller, and M. Mühlenbrock. Proceedings of the European Conference on Computer-Supported Collaborative Learning (Euro-CSCL 2001), page 324-331. Maastricht, The Netherlands, , (2001)
K. Gaßner. Proceedings of the European Conference on Computer-Supported Collaborative Learning (Euro-CSCL 2001), page 261-268. Maastricht, The Netherlands, , (2001)
N. Pinkwart, H. Hoppe, and K. Gaßner. Proceedings of 7th International Workshop on Groupware (CRIWG 2001), page 142-147. Los Alamitos, California, IEEE Computer Society, (2001)
M. Mühlenbrock, and H. Hoppe. Proceedings of the International Conference on Artificial Intelligence in Education AIED-2001, page 154-165. San Antonio, TX, IOS Press Amsterdam, (2001)