B. Sarwar, G. Karypis, J. Konstan, and J. Riedl. In Proceedings of The 6th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, Workshop on Web Mining for E--Commerce -- Challenges and Opportunities (WEBKDD'00), (August 2000)
T. Bogers, and A. van den Bosch. Proceedings of the ACM RecSys'09 Workshop on Recommender Systems & the Social Web, page 9-16. New-York, NY, USA, (2009)
H. Nanba, and M. Okumura. Research and Advanced Technology for Digital Libraries, volume 3652 of Lecture Notes in Computer Science, Springer, Berlin / Heidelberg, (2005)
B. Sarwar, G. Karypis, J. Konstan, and J. Riedl. Proceedings of the 2nd ACM conference on Electronic commerce, page 158--167. New York, NY, USA, ACM, (2000)
B. Sarwar, G. Karypis, J. Konstan, and J. Riedl. Proceedings of the 10th international conference on World Wide Web, page 285--295. New York, NY, USA, ACM, (2001)
D. Parra, and P. Brusilovsky. RecSys '09: Proceedings of the third ACM conference on Recommender systems, page 237--240. New York, NY, USA, ACM, (2009)