1. Searching the World Wide Web;Lawrence;Science,1998
2. The Harvest information discovery and access system;Bowman;Computer Networks and ISDN Systems,1995
3. Sato N, Uehara M, Sakai Y, Mori H. A distributed search engine for fresh information retrieval. In: Proceedings of the Database and Expert Systems Applications, 12th International Workshop, 2001.
4. My personal search engine;Overmeer;Computer Networks,1999
5. Search engines and Web dynamics;Risvik;Computer Networks,2002