@article{2171,
author = {Church, Alonzo},
title = {Conditioned disjunction as a primitive connective for the propositional calculus},
journal = {Portugaliae mathematica},
volume = {7},
year = {1948},
pages = {87-90},
zbl = {0034.29101},
mrnumber = {0028253},
language = {en},
url = {http://dml.mathdoc.fr/item/2171}
}
Church, Alonzo. Conditioned disjunction as a primitive connective for the propositional calculus. Portugaliae mathematica, Tome 7 (1948) pp. 87-90. http://gdmltest.u-ga.fr/item/2171/