@article{1200690175,
author = {Ohnishi, Masao},
title = {Gentzen decision procedures for Lewis's systems S2 and S3},
journal = {Osaka Math. J.},
volume = {13},
number = {1},
year = {1961},
pages = { 125-137},
language = {en},
url = {http://dml.mathdoc.fr/item/1200690175}
}
Ohnishi, Masao. Gentzen decision procedures for Lewis's systems S2 and S3. Osaka Math. J., Tome 13 (1961) no. 1, pp. 125-137. http://gdmltest.u-ga.fr/item/1200690175/