G. Buscher, L. van Elst, and A. Dengel. SIGIR '09: Proceedings of the 32nd international ACM SIGIR conference on Research and development in information retrieval, page 67--74. New York, NY, USA, ACM, (2009)
G. Buscher, L. van Elst, and A. Dengel. SIGIR '09: Proceedings of the 32nd international ACM SIGIR conference on Research and development in information retrieval, page 67--74. New York, NY, USA, ACM, (2009)