1. Barendregt, H., The Lambda Calculus, its Syntax and Semantics (North-Holland, Amsterdam, 1981)
2. Barendregt, H., Coppo, M. and Dezani-Ciancaglini, M., A Filter Lambda Model and the Completeness of Type Assignment, J. Symbolic Logic (to appear)
3. Functional Characters of Solvable Terms;Coppo;Z. Math. Logik Grundlag. Math.,1981
4. Coppo, M., Completeness of Type Assignment in Continuous Lambda Models, Theor. Comput. Sci. (to appear)
5. Curry, H.B. and Feys, R., Combinatory Logic I (North-Holland, Amsterdam, 1958)