Judith Masthoff, Bamshad Mobasher, Michel C. Desmarais, Roger Nkambou: User Modeling, Adaptation, and Personalization - 20th International Conference, UMAP 2012, Montreal, Canada, July 16-20, 2012. Proceedings. Lecture Notes in Computer Science 7379, Springer 2012, ISBN 978-3-642-31453-7