1. The type free lambda calculus;Barendregt,1977
2. The Lambda Calculus, Its Syntax and Semantics;Barendregt,1981
3. Equality of λ-terms in the model ⊤ω;Barendregt,1980
4. Barendregt, H. P., Coppo, M., and Dezani-Ciancaglini, M., A filter lambda model and the completeness of type assignment, J. Symbolic Logic, to appear.
5. Some Syntactic and Categorical Constructions of Lambda-Calculus Models;Berry,1981