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C. Schmitz, S. Staab, R. Studer, G. Stumme, und J. Tane. Proc. E-Learn 2002: World Conference on E-Learning in Corporate, Government, Healthcare, & Higher Education, Montreal, (Oktober 2002)
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C. Schmitz, S. Staab, R. Studer, G. Stumme, und J. Tane. Proceedings of E-Learn 2002: World Conference on E-Learning in Corporate, Government, Healthcare, & Higher Education, October 15-19 2002, Montreal, Canada, Seite 909-915. (2002)