N. Pinkwart, H. U. Hoppe, M. Milrad, and J. Perez
Educational Scenarios for cooperative use of Personal Digital Assistants
Journal of Computer Assisted Learning, 19(3), 2003
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L. Bollen, H. Hoppe, M. Milrad, and N. Pinkwart
Collaborative Modelling in Group Learning Environments
Proceedings of the 20th International Conference of the System Dynamics Society (SDS), System Dynamics Society, 2002
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