V. Devedzic, J. Good, A. Harrer, R. Luckin, D. Pearce, S. Retalis, and J. Robertson. Artificial Intelligence in Education - Building Technology Rich Learning Contexts that Work, volume 158 of Frontiers in Artificial Intelligence and Applications, page 715. Amsterdam, IOS Press, (2007)
A. Harrer, S. Ziebarth, A. Giemza, and H. Hoppe. The 8th IEEE International Conference on Advanced Learning Technologies, page 41-45. Santander, Spain, IEEE Computer Society Press, (2008)
A. Harrer, R. Hever, and S. Ziebarth. Artificial Intelligence in Education - Building Technology Rich Learning Contexts that Work, 158, page 503-510. Amsterdam, IOS Press, (2007)
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, and L. Bollen. Modellierung als Schlüsselkonzept in intelligenten Lehr-/Lernsystemen, Workshopband zur Tagung Modellierung 2004, Marburg, , (2004)
M. Jansen, K. Sachdeva, and A. Harrer. Proceedings of the Workshop on Expressive Media and Intelligent Tools for Learning (German Conference on Artificial Intelligence KI-2003), , (2003)Hamburg 2003.
N. Pinkwart, A. Harrer, S. Lohmann, and S. Vetter. Proceedings of the 4th In-ternational Conference on Web-Based Education, page 201-206. Anaheim (CA), ACTA Press, (2005)
Y. Miao, K. Hoeksema, H. Hoppe, and A. Harrer. Proceedings of the International Conference on Computer Supported Collaborative Learning (CSCL2005), Taiwan, , (2005)