@inproceedings{GassnerJansenHarreretal.2003, author = {K. Ga{\"s}ner and Marc Jansen and Andreas Harrer and K. Herrmann and Heinz Ulrich Hoppe}, title = {Analysis Methods for Collaborative Models and Activities}, series = {Proceedings of the International Conference on Computer Supported Collaborative Learning (CSCL2003)}, volume = {2003}, year = {2003}, language = {en} }