Hao Wang. Ordinal numbers and predicative set theory. Zeitschrift für mathematische Logik und Grundlagen der Mathematik, vol. 5 (1959), pp. 216–239. Reprinted in A survey of mathematical logic, by Hao Wang, Studies in logic and the foundations of mathematics, Science Press, Peking, and North-Holland Publishing Company, Amsterdam, 1963, pp. 624–651.
1965 ◽
Vol 30
(2)
◽
pp. 250-250