@article{1093891212,
author = {Soboci\'nski, Boles\l aw},
title = {Concerning the proper axioms of ${\rm S}4.02$.},
journal = {Notre Dame J. Formal Logic},
volume = {15},
number = {1},
year = {1974},
pages = { 169-172},
language = {en},
url = {http://dml.mathdoc.fr/item/1093891212}
}
Sobociński, Bolesław. Concerning the proper axioms of ${\rm S}4.02$.. Notre Dame J. Formal Logic, Tome 15 (1974) no. 1, pp. 169-172. http://gdmltest.u-ga.fr/item/1093891212/