1. Aczel, P., Carlisle, D.P. The logical theory of constructions: A formal framework and its implementation. In (Huet, G., Plotkin, G.,eds) Proceedings of The First Workshop on Logical Frameworks, Antibes, France (to appear).
2. Frege structures and the notions of truth, proposition, and set;Aczel,1980
3. Frege structures revisited;Aczel,1983
4. A non-type-theoretic definition of Martin-Löf's types;Allen,1987
5. A Non-Type-Theoretic Semantics for Type-Theoretic Language;Allen,1987