1. Intelligent crawling on the world wide web with arbitrary predicates;Aggarwal,2001
2. Modern information retrieval;Baeza-Yates,1999
3. Improved algorithms for topic distillation in a hyperlinked environment;Bharat,1998
4. Searching for arbitrary information in the WWW: the fish search for mosaic;Bra,1994
5. The anatomy of a large-scale hypertextual web search engine;Brin,1998