1. Foundations of Constructive Mathematics;Beeson,1985
2. Proving programs and programming proofs;Beeson,1985
3. Iterated Inductive Definitions and Subsystems of Analysis: Recent Proof-Theoretical Studies;Buchholz,1981
4. Implementing Mathematics with the Nuprl Proof Development System;Constable,1986
5. A language and axioms for explicit mathematics;Feferman,1975