@article{1093891012,
author = {Soboci\'nski, Boles\l aw},
title = {A new axiomatization of modal system ${\rm K}1.2$.},
journal = {Notre Dame J. Formal Logic},
volume = {14},
number = {1},
year = {1973},
pages = { 413-414},
language = {en},
url = {http://dml.mathdoc.fr/item/1093891012}
}
Sobociński, Bolesław. A new axiomatization of modal system ${\rm K}1.2$.. Notre Dame J. Formal Logic, Tome 14 (1973) no. 1, pp. 413-414. http://gdmltest.u-ga.fr/item/1093891012/