@article{1093891712,
author = {Englebretsen, George},
title = {Sommers' proof that something exists.},
journal = {Notre Dame J. Formal Logic},
volume = {16},
number = {1},
year = {1975},
pages = { 298-300},
language = {en},
url = {http://dml.mathdoc.fr/item/1093891712}
}
Englebretsen, George. Sommers' proof that something exists.. Notre Dame J. Formal Logic, Tome 16 (1975) no. 1, pp. 298-300. http://gdmltest.u-ga.fr/item/1093891712/