1. M.W. Berry and M. Browne. Understanding Search Engines: Mathematical Modeling and Text Retrieval.SIAM, Philadelphia, 1999.
2. P. Berkhin and J.D. Becher. Learning simple relations: Theory and applications. In Proceedings of the Second SIAM International Conference on Data Mining, Arlington, VA, pages 410–436, April 2002.
3. D. Boley, M. Gini, R. Gross, E.-H. Han, K. Hastings, G. Karypis, V. Kumar, B. Mobasher, and J. Moore. Document categorization and query generation on the World Wide Web using WebACE. AIReview, 13 (5,6): 365–391, 1999.
4. D. Boley, M. Gini, R. Gross, E.-H. Han, K. Hastings, G. Karypis, V. Kumar, B. Mobasher, and J. Moore.Partitioning-based clustering for Web document categorization.Decision Support Systems, 27 (3): 329–341, 1999.
5. D.L. Boley.Principal direction divisive partitioning.Data Mining and Knowledge Discovery, 2 (4): 325–344, 1998.