S. Harrer, J. Lenhard, O. Kopp, V. Ferme, and C. Pautasso. Proceedings of the 22nd European Conference on Pattern Languages of Programs, EuroPLoP 2017, Irsee, Germany, July 12-16, 2017, page 1:1--1:46. ACM, (July 2017)
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)
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)
L. Bollen, A. Harrer, H. Hoppe, and W. van Joolingen. The 7th IEEE International Conference on Advanced Learning Technologies ICALT 2007, page 15-17. Los Alamitos, CA., IEEE Computer Society, (2007)