%0 Journal Article %A Freudenthal, Hans %D 1974 %J Journal of Symbolic Logic %N 3 %P 609-609 %T Beth E. W.. Remarks on intuitionistic logic. Constructivity in mathematics, Proceedings of the colloquium held at Amsterdam, 1957, edited by Heyting A., Studies in logic and the foundations of mathematics, North-Holland Publishing Company, Amsterdam 1959, pp. 15–25 %V 39