In: Harold Boley; M.M. Richter (Hrsg.). International Workshop on Processing Declarative Knowledge. International Workshop on Processing Declarative Knowledge (PDK-91), July 1-3, Kaiserslautern, Germany, Pages 161-170, Lecture Notes in Computer Science (LNCS), Springer, 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.