1. R. Backhouse. On the meaning and construction of the rules in Martin-Löf s theory of types. In A. Avron et al, editor, Workshop on General Logic. LFCS Report Series, ECS-LFCS-88-52, Dept. of Computer Science, University of Edinburgh, 1988.
2. R. Burstall and J. McKinna. Deliverables: an approach to program development in the calculus of constructions. LFCS report ECS-LFCS-91-133, Dept of Computer Science, University of Edinburgh, 1991.
3. Th. Coquand and G. Huet. The calculus of constructions. Information and Computation, 76(2/3), 1988.
4. Th. Coquand. Metamathematical investigations of a calculus of constructions. manuscript, 1989.
5. Th. Coquand. An algorithm for testing conversion in Type Theory. In G. Huet and G. Plotkin, editors, Logical Frameworks. Cambridge University Press, 1991.