S. Berkovsky, T. Kuflik, and F. Ricci. User Modeling 2007, volume 4511 of Lecture Notes in Computer Science, chapter 44, Springer Berlin / Heidelberg, Berlin, Heidelberg, (2007)
S. Berkovsky, T. Kuflik, and F. Ricci. User Modeling 2007, volume 4511 of Lecture Notes in Computer Science, chapter 44, Springer Berlin / Heidelberg, Berlin, Heidelberg, (2007)