In: Karl-Hans Bläsius; Hans-Jürgen Bürckert (Hrsg.). Deduction Systems in Artificial Intelligence. Ellis Horwood Series in Artificial Intelligence, ISBN 9780745804095, Ellis Horwood, 1989.
In: Stephan Busemann; Christa Hauenschild; Carla Umbach (Hrsg.). Views of the Syntax/ Semantics Interface. Proceedings of the Workshop 'GPSG and Semantics'. Workshop GPSG and Semantics, February 22-24, Berlin, Germany, Pages 17-43, KIT-Report, No. 74, TU Berlin, 1989.
In: 4th Conference of the European Chapter of the Association for Computational Linguistics. Conference of the European Chapter of the Association for Computational Linguistics (EACL-89), 4th, April 10-12, Manchester, United Kingdom, Pages 272-281, ACL, 1989.
In: 27th Annual Meeting of the Association for Computational Linguistics. Annual Meeting of the Association for Computational Linguistics (ACL-89), June 26-29, Vancouver, BC, Canada, Pages 212-219, ACL, 1989.