@article{1093888216,
author = {Kalman, John A.},
title = {A shortest single axiom for the classical equivalential calculus.},
journal = {Notre Dame J. Formal Logic},
volume = {19},
number = {1},
year = {1978},
pages = { 141-144},
language = {en},
url = {http://dml.mathdoc.fr/item/1093888216}
}
Kalman, John A. A shortest single axiom for the classical equivalential calculus.. Notre Dame J. Formal Logic, Tome 19 (1978) no. 1, pp. 141-144. http://gdmltest.u-ga.fr/item/1093888216/