@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/