1. 江口浩二, 伊藤秀隆, 隈元昭, 金田彌吉 (1999). 漸次的に拡張されたクエリを用いた適応的文書クラスタリング法 電子情報通信学会論文誌, J82-D-I (1), pp. 140–149.
2. Ferragina, P. and Gulli, A. (2005). “A Personalized Search Engine Based on Web-Snippet Hierarchical Clustering.” In Proceedings of the 14th International World Wide Web Conference (WWW’05), pp. 801–810.
3. Fung, B., Wang, K., and Ester, M. (2003). “Hierarchical Document Clustering Using Frequent Itemsets.” In Proceedings of the 2003 SIAM International Conference on Data Mining, pp. 59–70.
4. Gelgi, F., Davulcu, F., and Vadrevu, S. (2007). “Term Ranking for Clustering Web Search Results.” In Proceedings of the 10th International Workshop on Web and Databases (WebDB 2007).
5. Hearst, M. and Pedersen, J. (1996). “Reexamining the Cluster Hypothesus: Scatter/Gather on Retrieval Results.” In Proceedings of the 19th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR’96), pp. 76–84.