In: KI - Künstliche Intelligenz, German Journal on Artificial Intelligence - Organ des Fachbereiches "Künstliche Intelligenz" der Gesellschaft für Informatik e.V. (KI), Vol. 6, No. 1, Springer, 1992.
In: M. Everaert; E.-J. van der Linden; A. Schenk; R. Schreuder (Hrsg.). International Conference on Idioms. International Conference on Idioms, September 2-4, Tilburg, Netherlands, Pages 11-24, Institute for Language Technology and Artificial Intelligence ITK, 1992.
In: Harald Trost; Rolf Backofen (Hrsg.). Workshop of the 10th European Conference on Artificial Intelligence W2. Coping with Ambiguity in Typed Feature Formalisms. European Conference on Artificial Intelligence (ECAI-92), 10th, August 3-7, Vienna, Australia, John Wiley and Sons, 1992.
In: John Mylopoulos; Raymond Reiter (Hrsg.). 12th International Joint Conference on Artificial Intelligence. International Joint Conference on Artificial Intelligence (IJCAI-91), 12th, August 24-30, Sydney, NSW, Australia, Pages 931-936, Vol. 2, Morgan Kaufmann, 1991.