1. Baeza-Yates, R., Castillo, C.: Balancing collection volume, quality and freshness in a web crawler. In: Abraham, A., Ruiz-del-Solar, J., Köppen, M. (eds.) Soft-Computing Systems: Design, Management and Applications Frontiers in Artificial Intelligence and Applications, vol. 87, pp. 565–572. IOS Press, Amsterdam (2002)
2. Baeza-Yates, R., Poblete, B.J., Saint-Jean, F.: Evolución de la Web Chilena 2001-2002 (Evolution of the Chilean Web 2001 - 2002), Center for Web Research, Department of Computer Science, Universidad de Chile (January 2003) (in Spanish)
3. CLUTO Home page:
http://www-users.cs.umn.edu/~karypis/cluto/
4. Frankel, C., Swain, M.J., Athitsos, V.: WebSeer: An Image Search Engine for the World Wide Web, University of Chicago Technical Report TR-96-14, July 31 (1996)
5. Jaimes, A., Ruiz-del-Solar, J., Verschae, R., Yaksic, D., Baeza-Yates, R., Davis, E., Castillo, C.: On the Image Content of the Web in Chile. In: Proc. of the First Latin American Web Congress, November 10 - 12, pp. 72–83. IEEE CS Press, Santiago (2003)