@article{1183732966,
author = {Fitch, Frederic B.},
title = {A Definition of Existence in Terms of Abstraction and Disjunction},
journal = {J. Symbolic Logic},
volume = {22},
number = {1},
year = {1957},
pages = { 343-344},
language = {en},
url = {http://dml.mathdoc.fr/item/1183732966}
}
Fitch, Frederic B. A Definition of Existence in Terms of Abstraction and Disjunction. J. Symbolic Logic, Tome 22 (1957) no. 1, pp. 343-344. http://gdmltest.u-ga.fr/item/1183732966/