1. Soumen Chakrabarti, Byron Dom, Prabhakar Raghavan, Sridhar Rajagopalan, David Gibson and Jon Kleinberg. Automatic Resource Compilation by Analyzing Hyperlink Structure and Associated Text - Proceedings of the Seventh International World Wide Web Conference Brisbane, Australia. April 1998.
2. The Industry Standard: The Future of Search Engines By Mark Frauenfelder September 25, 1998. http://www.thestandard.com/article/display/0,1151,1826,00.html

Now imagine combining hub and authority sites, with keyword driven multiengine search tools into a new kind of Nirvana.