@article{1094068850,
author = {Thomas, Ivo},
title = {Decision for $K4$.},
journal = {Notre Dame J. Formal Logic},
volume = {8},
number = {3},
year = {1967},
pages = { 337-338},
language = {en},
url = {http://dml.mathdoc.fr/item/1094068850}
}
Thomas, Ivo. Decision for $K4$.. Notre Dame J. Formal Logic, Tome 8 (1967) no. 3, pp. 337-338. http://gdmltest.u-ga.fr/item/1094068850/