J. Dean, C. Chambers, and D. Grove. Proceedings of the ACM SIGPLAN 1995 conference on Programming language design and implementation - PLDI \textquotesingle95, ACM Press, (1995)
J. Reynar, and A. Ratnaparkhi. Proceedings of the fifth conference on Applied natural language processing, page 16--19. Stroudsburg, PA, USA, Association for Computational Linguistics, (1997)
E. Alfonseca, S. Bilac, and S. Pharies. Proceedings of the 46th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies (ACL-08:HLT), Columbus, OH, (2008)