1. C.L.A. Clarke, G.V. Cormack, and E.A. Tudhope. Relevance ranking for one to three term queries. In Proceedings of RIAO’97, pages 388–400, 1997.
2. W.S. Cooper. Some inconsistencies and misidentified modeling assumptions in probabilistic information retrieval. ACM Transactions on Information Systems, 13:100–111, 1995.
3. W.B. Croft and H.R. Turtle. Text retrieval and inference. In P. Jacobs, editor, Text-based Intelligent Systems, pages 127–156. Lawrence Erlbaum, 1992.
4. D. Hawking and P. Thistlewaite. Relevance weighting using distance between term occurrences. Technical Report TR-CS-96-08, The Australian National University, August 1996. http://cs.anu.edu.au/techreports/ .
5. C. Manning and H. Schütze, editors. Statistical NLP: Theory and Practice, draft. http://www.sultry.arts.su.edu.au/manning/courses/statnlp/ , 1997.