@article{1183389102,
author = {Quine, W. V. and Goodman, Nelson},
title = {Elimination of Extra-Logical Postulates},
journal = {J. Symbolic Logic},
volume = {5},
number = {1},
year = {1940},
pages = { 104-109},
language = {en},
url = {http://dml.mathdoc.fr/item/1183389102}
}
Quine, W. V.; Goodman, Nelson. Elimination of Extra-Logical Postulates. J. Symbolic Logic, Tome 5 (1940) no. 1, pp. 104-109. http://gdmltest.u-ga.fr/item/1183389102/