@article{1183731635, author = {Gottschalk, W. H.}, title = {The Theory of Quaternality}, journal = {J. Symbolic Logic}, volume = {18}, number = {1}, year = {1953}, pages = { 193-196}, language = {en}, url = {http://dml.mathdoc.fr/item/1183731635} }
Gottschalk, W. H. The Theory of Quaternality. J. Symbolic Logic, Tome 18 (1953) no. 1, pp. 193-196. http://gdmltest.u-ga.fr/item/1183731635/