In: John Mylopoulos; Raymond Reiter (Hrsg.). Proceedings of the 12th International Joint Conference on Artificial Intelligence. International Joint Conference on Artificial Intelligence (IJCAI-91), August 24-30, Sydney, NSW, Australia, Pages 1003-1011, Morgan Kaufmann Publishers, 1991.
In: Proceedings of the Workshop on Constraint Propagation, Linguistic Description, and Computation. Workshop on Constraint Propagation, Linguistic Description, and Computation, Lugano, Switzerland, IDSIA Working Paper, No. 5, 1991.
In: Ted Briscoe; Ann Copestake; Valeria de Paiva (Hrsg.). ACQUILEX Workshop on Default Inheritance in the Lexicon. Workshop on Default Inheritance in the Lexicon (ACQUILEX-91), April 15, Cambridge, England, United Kingdom, Technical Report, No. 238, 1991.
In: 5th Conference of the European Chapter of the Association for Computational Linguistics. Conference of the European Chapter of the Association for Computational Linguistics (EACL-91), 5th, April 9-11, Berlin, Germany, Pages 245-250, ACL, 1991.
In: ACL Workshop on Reversible Grammar in Natural Language Processing. ACL Workshop on Reversible Grammar in Natural Language Processing, June 17, Berkeley, CA, USA, Pages 31-39, 1991.