1. Lectures on Non-Well-Founded Sets;Aczel,1988
2. The Lambda Calculus: Its Syntax and Semantics;Barendregt,1981
3. Proving programs and programming proofs;Beeson,1986
4. Foundations of Constructive Mathematics: Metamathematical Studies;Beeson,1985
5. Foundations of Constructive Analysis;Bishop,1967