D. Klein, and C. Manning. Proceedings of the 40th Annual Meeting on Association for Computational Linguistics, page 128--135. Stroudsburg, PA, USA, Association for Computational Linguistics, (2002)
D. Martinez, and E. Agirre. Proceedings of the 2000 Joint SIGDAT conference on Empirical methods in natural language processing and very large corpora: held in conjunction with the 38th Annual Meeting of the Association for Computational Linguistics - Volume 13, page 207--215. Stroudsburg, PA, USA, Association for Computational Linguistics, (2000)
P. Talukdar, T. Brants, M. Liberman, and F. Pereira. Proceedings of the Tenth Conference on Computational Natural Language Learning (CoNLL-X), page 141--148. New York City, Association for Computational Linguistics, (June 2006)