S. C. Kleene. Countable functionals. Constructivity in mathematics, Proceedings of the Colloquium held at Amsterdam, 1957, Studies in logic and the foundations of mathematics, North-Holland Publishing Company, Amsterdam1959, pp. 81–100. - S. C. Kleene. Recursive functionals of higher finite types. Summaries of talks presented at the Summer Institute for Symbolic Logic, Cornell University, 1957, 2nd edn., Communications Research Division, Institute for Defense Analyses, Princeton1960, pp. 148–154.
1962 ◽
Vol 27
(3)
◽
pp. 359-360