@article{1093957652,
author = {Putnam, Hilary},
title = {A note on constructible sets of integers.},
journal = {Notre Dame J. Formal Logic},
volume = {4},
number = {1},
year = {1963},
pages = { 270-273},
language = {en},
url = {http://dml.mathdoc.fr/item/1093957652}
}
Putnam, Hilary. A note on constructible sets of integers.. Notre Dame J. Formal Logic, Tome 4 (1963) no. 1, pp. 270-273. http://gdmltest.u-ga.fr/item/1093957652/