M. Perkowitz, и O. Etzioni. AAAI '98/IAAI '98: Proceedings of the 15th National/10th Conference on Artificial Intelligence/Innovative Applications of Artificial Intelligence, стр. 727-732. Menlo Park, CA, USA, American Association for Artificial Intelligence, (1998)
F. Abel, N. Henze, E. Herder, и D. Krause. User Modeling, Adaptation, and Personalization, 18th International Conference, UMAP 2010, Big Island, HI, USA, June 20-24, 2010. Proceedings, том 6075 из Lecture Notes in Computer Science, стр. 16-27. Springer, (2010)