1. Baeza-Yates, R.: Query usage mining in search engines. In: Scime, A. (ed.) Web Mining: Applications and Techniques. Idea Group, USA (2004)
2. Baeza-Yates, R., Ribeiro-Neto, B.: Modern Information Retrieval, ch. 3, pp. 75–79. Addison-Wesley, Reading (1999)
3. Beeferman, D., Berger, A.: Agglomerative clustering of a search engine query log. In: KDD, Boston, MA USA, pp. 407–416 (2000)
4. Fonseca, B.M., Golgher, P.B., De Moura, E.S., Ziviani, N.: Using association rules to discovery search engines related queries. In: First Latin American Web Congress (LAWEB 2003), Santiago, Chile (November, 2003)
5. Jansen, M., Spink, A., Bateman, J., Saracevic, T.: Real life information retrieval: A study of user queries on the web. ACM SIGIR Forum 32(1), 5–17 (1998)