@article{1093958259,
author = {Scharle, Thomas W.},
title = {Axiomatization of propositional calculus with Sheffer functors.},
journal = {Notre Dame J. Formal Logic},
volume = {6},
number = {1},
year = {1965},
pages = { 209-217},
language = {en},
url = {http://dml.mathdoc.fr/item/1093958259}
}
Scharle, Thomas W. Axiomatization of propositional calculus with Sheffer functors.. Notre Dame J. Formal Logic, Tome 6 (1965) no. 1, pp. 209-217. http://gdmltest.u-ga.fr/item/1093958259/