Joseph A. Konstan Ricardo Conejo José-Luis Marzo Nuria Oliver User Modeling, Adaption and Personalization - 19th International Conference, UMAP 2011, Girona, Spain, July 11-15, 2011. Proceedings 6787 2011 http://dx.doi.org/10.1007/978-3-642-22362-4 978-3-642-22361-7 UMAP Lecture Notes in Computer Science Springer db/conf/um/umap2011.html