TY - CHAP U1 - Konferenzveröffentlichung A1 - Gaßner, K. A1 - Jansen, Marc A1 - Harrer, Andreas A1 - Herrmann, K. A1 - Hoppe, Heinz Ulrich T1 - Analysis Methods for Collaborative Models and Activities T2 - Proceedings of the International Conference on Computer Supported Collaborative Learning (CSCL2003) Y1 - 2003 VL - 2003 ER -