1. An Introduction to Mathematical Logic and Type Theory: To Truth Through Proof;Andrews,1986
2. Classical type theory;Andrews,2001
3. The Lambda Calculus. Its Syntax and Semantics;Barendregt,1984
4. Functional programming and lambda calculus;Barendregt,1990
5. Exact bounds for lengths of reductions in typed λ-calculus;Beckmann;J. Symbolic Logic,2001