J. Mori, Y. Matsuo, H. Koshiba, K. Aihara, und H. Takeda. User Modeling, Adaptation, and Personalization: 17th International Conference, UMAP 2009, formerly UM and AH, Trento, Italy, Volume 5535 von Lecture Notes in Computer Science, Springer, Berlin, (2009)
B. Kirman, C. Linehan, S. Lawson, D. Foster, und M. Doughty. Proceedings of the ACM Conference Extended Abstracts on Human Factors in Computing Systems (CHI EA '10), Atlanta, GA, USA, Seite 2685--2694. (2010)