@article{1183389234, author = {Langford, C. H.}, title = {Review: A. P. Ushenko, The Calculus of Propositions and Self-Contradiction}, journal = {J. Symbolic Logic}, volume = {6}, number = {1}, year = {1941}, language = {en}, url = {http://dml.mathdoc.fr/item/1183389234} }
Langford, C. H. Review: A. P. Ushenko, The Calculus of Propositions and Self-Contradiction. J. Symbolic Logic, Tome 6 (1941) no. 1, . http://gdmltest.u-ga.fr/item/1183389234/