G. Buscher, A. Dengel, and L. van Elst. Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, page 387--394. New York, NY, USA, ACM, (2008)
G. Buscher, A. Dengel, and L. van Elst. Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, page 387--394. New York, NY, USA, ACM, (2008)