1. Iteration and recursion;Eilenberg;Proceedings of the Nat. Acad. of Sci.,1968
2. Recursiveness;Eilenberg,1970
3. Markov's normal algorithms without concluding formulas: an application;Germano,1971
4. A characterization of partial recursive functions via sequence functions;Germano;Notices Amer. Math. Soc.,1972
5. A new theory of computability;Germano,1972