@article{1093894376,
author = {Thomas, Ivo},
title = {A proof of a theorem of \L\ ukasiewicz.},
journal = {Notre Dame J. Formal Logic},
volume = {12},
number = {1},
year = {1971},
pages = { 507-508},
language = {en},
url = {http://dml.mathdoc.fr/item/1093894376}
}
Thomas, Ivo. A proof of a theorem of Ł ukasiewicz.. Notre Dame J. Formal Logic, Tome 12 (1971) no. 1, pp. 507-508. http://gdmltest.u-ga.fr/item/1093894376/