@article{1093957240,
author = {Thomas, Ivo},
title = {Solutions of five modal problems of Soboci\'nski.},
journal = {Notre Dame J. Formal Logic},
volume = {3},
number = {1},
year = {1962},
pages = { 199-200},
language = {en},
url = {http://dml.mathdoc.fr/item/1093957240}
}
Thomas, Ivo. Solutions of five modal problems of Sobociński.. Notre Dame J. Formal Logic, Tome 3 (1962) no. 1, pp. 199-200. http://gdmltest.u-ga.fr/item/1093957240/