1. Barendregt, H.P.: The Lambda Calculus: Its Syntax and Semantics. second revised edn. North- Holland, Amsterdam (1984)
2. David, R.: Une preuve simple de résultats classiques en λ calcul. C.R. Acad. Sci. Paris, t. 320 Série I, 1401–1406 (1995)
3. Lecture Notes in Computer Science;P. Groote de,1999
4. Cambridge Tracts in Theoretical Computer Science;J.-Y. Girard,1989
5. Joachimski, F., Matthes, R.: Short proofs of normalization for the simplytyped lambda-calculus, permutative conversions and Gödel’s T. Submitted to the Archive for Mathematical Logic (1999)