S. Rendle, and L. Schmidt-Thieme. Proceedings of the third ACM international conference on Web search and data mining, page 81--90. New York, NY, USA, ACM, (2010)
S. Rendle, L. Balby Marinho, A. Nanopoulos, and L. Schmidt-Thieme. KDD '09: Proceedings of the 15th ACM SIGKDD international conference on Knowledge discovery and data mining, page 727--736. New York, NY, USA, ACM, (2009)