1. Basili R., Pazienza M.T. and Vindigni M. 1997. Corpus-driven Unsupervised Learning of Verb Subcategorization frames. Proceedings of the Conference of the Italian Association for Artificial Intelligence, AI*IA 97, Rome.
2. Brent M. 1993. From Grammar to Lexicon: Unsupervised Learning of Lexical Syntax. Computational Linguistics, vol. 19, No. 3, pp. 243–262.
3. Briscoe T. and Carroll J. 1997. Automatic Extraction of Subcategorization from Corpora. Proceedings of the 5th ANLP Conference, pp. 356–363. ACL, Washington D.C.
4. Cooper J. and Herskovits E. 1992. A Bayesian method for the induction of probabilistic networks from data. Machine Learning, 9, pp.309–347.
5. Dunning T. 1993. Accurate Methods for the Statistics of Surprise and Coincidence. Computational Linguistics. vol.19, No. 1, pp. 61–74.