@article{1183732662,
author = {Putnam, Hilary},
title = {Decidability and Essential Undecidability},
journal = {J. Symbolic Logic},
volume = {22},
number = {1},
year = {1957},
pages = { 39-54},
language = {en},
url = {http://dml.mathdoc.fr/item/1183732662}
}
Putnam, Hilary. Decidability and Essential Undecidability. J. Symbolic Logic, Tome 22 (1957) no. 1, pp. 39-54. http://gdmltest.u-ga.fr/item/1183732662/