@article{1183732488,
author = {Robinson, Abraham},
title = {Review: Kurt Bing, On Arithmetical Classes Not Closed Under Direct Union},
journal = {J. Symbolic Logic},
volume = {21},
number = {1},
year = {1956},
language = {en},
url = {http://dml.mathdoc.fr/item/1183732488}
}
Robinson, Abraham. Review: Kurt Bing, On Arithmetical Classes Not Closed Under Direct Union. J. Symbolic Logic, Tome 21 (1956) no. 1, . http://gdmltest.u-ga.fr/item/1183732488/