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In: Harold Boley; François Bry; Ulrich Geske (Hrsg.). Proceedings of the Workshop on "Neuere Entwicklungen der deklarativen KI-Programmierung". Neuere Entwicklungen der deklarativen KI-Programmierung, September 13-15, Berlin, Germany, Pages 67-82, Research Report, No. RR-93-35, DFKI, 1993.
In: 31st Annual Meeting of the Association for Computational Linguistics (ACL '93). Annual Meeting of the Association for Computational Linguistics (ACL-93), June 22-26, Ohio State University, Columbus, Ohio, USA, Pages 140-147, ACL, 1993.