N. Malzahn, M. Pokrandt, and H. Hoppe. Proceedings of the 16th International Conference on Computers in Education (ICCE 2008), page 499-504. Taipei, Taiwan, (2008)
A. Harrer, S. Zeini, and S. Ziebarth. Proceedings of the 2009 International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2009), Athens, Greece, (July 2009)
A. Harrer, L. Kobbe, and N. Malzahn. Mice, Minds, and Society - The Computer Supported
Collaborative Learning (CSCL) Conference 2007, 8, page 277--279. International Society of the Learning Sciences, (2007)
N. Malzahn, M. Pokrandt, and H. Hoppe. Proceedings of the 16th International Conference on
Computers in Education (ICCE 2008), page 499--504. Taipei, Taiwan, (2008)