1. The type theoretic interpretation of constructive set theory. In: Logic Colloquium '77 (A. MacIntyre, L. Pacholski, and J. Paris, eds.), pp. 55–66 (North-Holland, 1978).
2. The type theoretic interpretation of constructive set theory: choice principles. In: The L. E. J. Brouwer Centenary Symposium (S. S. Troelstra and D. van Dalen, eds.), pp. 1–40 (North-Holland, 1982).
3. The type theoretic interpretation of constructive set theory: inductive definitions. In: Logic, Methodology and Philosophy of Science VII (R. B. Marcus et al., eds.), pp. 17–49 (North-Holland, 1986).
4. and , Notes on constructive set theory. Mittag-Leffler Technical Report No. 40 (2001).
5. Sheaf interpretations for generalised predicative intuitionistic systems. Ph. D. thesis, Department of Computer Science, University of Manchester (2002).