1. The undefima, bility of Church's 6;Barendrogt,1972
2. Combinatory Logic and the co-rule;Barondregt;Fund. Math.,1974
3. The type free lambda calculus, to appear in the Handbook of Mathematical Logic (1976);Barendregt,1976
4. A global representation of the recursive functions;Barondregt;to appear in J. Thooret. Comput. Sci.,1977
5. The lambda calculus, its syntax and semantics;Barendregt,1977