M. Chalmers, and P. Chitson. SIGIR '92: Proceedings of the 15th annual international ACM SIGIR conference on Research and development in information retrieval, page 330--337. New York, NY, USA, ACM, (1992)
M. Chalmers, and P. Chitson. SIGIR '92: Proceedings of the 15th annual international ACM SIGIR conference on Research and development in information retrieval, page 330--337. New York, NY, USA, ACM, (1992)