P. Symeonidis, A. Nanopoulos, and Y. Manolopoulos. RecSys '08: Proceedings of the 2008 ACM conference on Recommender systems, page 43--50. New York, NY, USA, ACM, (2008)
Y. Song, Z. Zhuang, H. Li, Q. Zhao, J. Li, W. Lee, and C. Giles. SIGIR '08: Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, page 515--522. ACM, (2008)
S. Rendle, and L. Schmidt-Thieme. Challenge of the 2009 ECML/PKDD at the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases, ACM, (2009)
L. Marinho, C. Preisach, and L. Schmidt-Thieme. Challenge of the 2009 ECML/PKDD at the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases, ACM, (2009)
L. Marinho, and L. Schmidt-Thieme. Proceedings of 31st Annual Conference of the Gesellschaft f$u$r Klassifikation (GfKl), Freiburg (to appear), Springer, (2007)
P. Heymann, D. Ramage, and H. Garcia-Molina. SIGIR '08: Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, page 531--538. ACM, (2008)