B. Lavoie, O. Rambow, und E. Reiter. Proceedings of the Fifth Conference on Applied Natural Language Processing (ANLP-97), Seite 253--256. Morristown, NJ, USA, Association for Computational Linguistics, (1997)
T. Strzalkowski, F. Lin, J. Perez-Carballo, und J. Wang. Proceedings of the fifth conference on Applied natural language processing, Seite 299--306. Morgan Kaufmann Publishers Inc. San Francisco, CA, USA, (1997)