K. Bollacker, S. Lawrence, und L. Giles. Proceedings of the Second International Conference on Autonomous Agents, Seite 116--123. New York, ACM Press, (1998)
K. Chandrasekaran, S. Gauch, P. Lakkaraju, und H. Luong. Adaptive Hypermedia and Adaptive Web-Based Systems, Volume 5149 von Lecture Notes in Computer Science, Springer, Berlin/Heidelberg, (2008)
L. Giles, K. Bollacker, und S. Lawrence. Digital Libraries 98 - The Third ACM Conference on Digital Libraries, Seite 89--98. Pittsburgh, PA, ACM Press, (Juni 1998)