1. Foundations of Constructive Mathematics: Metamathematical Studies;Beeson,1985
2. Proving programs and programming proofs;Beeson,1986
3. Polytime, combinatory logic and positive safe induction;Cantini;Archive for Mathematical Logic,2002
4. Choice and uniformity in weak applicative theories;Cantini,2005
5. The intrinsic computational difficulty of functions;Cobham,1965