1. A knowledge-based approach to the analysis of loops
2. Design recovery for maintenance and reuse
3. (1997). Elementary statistics: A step by step approach (3rd ed.). New York: McGraw-Hill.
4. & (1998, April). The anatomy of a large-scale hypertextual Web search engine. Paper presented at the Seventh International Conference on World Wide Web 7, Brisbane, Australia.
5. (2002, May). A taxonomy of web search. In Proceedings of the ACM SIGIR'02 Forum (pp. 3–10). New York: ACM.