S. Xu, S. Bao, B. Fei, Z. Su, и Y. Yu. Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, стр. 155--162. New York, NY, USA, ACM, (2008)
S. Xu, S. Bao, B. Fei, Z. Su, и Y. Yu. Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, стр. 155--162. New York, NY, USA, ACM, (2008)