M. Hearst, and J. Pedersen. SIGIR '96: Proceedings of the 19th annual international ACM SIGIR conference on Research and development in information retrieval, page 76--84. New York, NY, USA, ACM, (1996)
M. Hearst, and J. Pedersen. SIGIR '96: Proceedings of the 19th annual international ACM SIGIR conference on Research and development in information retrieval, page 76--84. New York, NY, USA, ACM, (1996)