R. Krestel, P. Fankhauser, and W. Nejdl. RecSys '09: Proceedings of the third ACM conference on Recommender systems, page 61--68. New York, NY, USA, ACM, (2009)
R. Krestel, P. Fankhauser, and W. Nejdl. RecSys '09: Proceedings of the third ACM conference on Recommender systems, page 61--68. New York, NY, USA, ACM, (2009)