1. Apte, C., Damerau, F. and Weiss, S. “Text mining with decision rules and decision trees,”, ACM Transactions on Information Ssystems, 12: 3, 23–251.
2. Bell, T. C., Cleary, J. G. and Witten, I. H. (1990). Text compression. New Jersey: Prentice Hall.
3. Benedetto, D., Caglioti, E. and Loreto, V. (2002) “Language trees and zipping,” Physical Review Letters, 88:4, 048702–1–4.
4. Biber, D. (1988). Variations across speech and writing. Cambridge: Cambridge University Press.
5. Boggess, L. Argawal, R. and Davis, R. (1991). “Disambiguation of preposi- tional phrases in atomatically labelled technical text,” AAAI’91, 155–159.