J. C. E. Dekker. Regressive isols. Sets, models and recursion theory. Proceedings of the Summer School in Mathematical Logic and Tenth Logic Colloquium, Leicester, August-September 1965, edited by John N. Crossley, Studies in logic and the foundations of mathematics, North-Holland Publishing Company, Amsterdam, and Humanities Press, New York, 1967, pp. 272–296.
1969 ◽
Vol 34
(3)
◽
pp. 519-519