B. Krause, A. Hotho, and G. Stumme. Proceedings of the IR research, 30th European conference on Advances in information retrieval, page 101--113. Berlin, Heidelberg, Springer-Verlag, (2008)
F. Abel, N. Henze, and D. Krause. Proceeding of the 17th ACM conference on Information and knowledge management, page 1429--1430. New York, NY, USA, ACM, (2008)
F. Abel, N. Henze, and D. Krause. CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge mining, page 1429--1430. New York, NY, USA, ACM, (2008)
S. Rendle, L. 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)