@article{1195521989,
author = {Tanaka, Sh\^otar\^o},
title = {On variants of axiom systems of propositional calculus, II},
journal = {Proc. Japan Acad.},
volume = {42},
number = {5},
year = {1966},
pages = { 452-456},
language = {en},
url = {http://dml.mathdoc.fr/item/1195521989}
}
Tanaka, Shôtarô. On variants of axiom systems of propositional calculus, II. Proc. Japan Acad., Tome 42 (1966) no. 5, pp. 452-456. http://gdmltest.u-ga.fr/item/1195521989/