Geert-Jan Houben Gord I. McCalla Fabio Pianesi Massimo Zancanaro User Modeling, Adaptation, and Personalization, 17th International Conference, UMAP 2009, formerly UM and AH, Trento, Italy, June 22-26, 2009. Proceedings 5535 2009 http://dx.doi.org/10.1007/978-3-642-02247-0 978-3-642-02246-3 UMAP Lecture Notes in Computer Science Springer db/conf/um/umap2009.html