1. Iteration and recursion;Eilenberg,1968
2. Recursiveness;Eilenberg,1970
3. Eliminability of concluding formulas in Markov's normal algorithms;Germano;Notices Amer. Math. Soc.,1971
4. A characterization of partial recursive functions via sequence functions;Germano;Notices Amer. Math. Soc.,1972
5. Quelques caracterizations des functions recursives partielles;Germano;C.R. Acad. Sci. Paris Sér. A,1973