@article{1195522249, author = {Tanaka, Sh\^otar\^o}, title = {On axiom systems of propositional calculi, IX}, journal = {Proc. Japan Acad.}, volume = {41}, number = {9}, year = {1965}, pages = { 798-800}, language = {en}, url = {http://dml.mathdoc.fr/item/1195522249} }
Tanaka, Shôtarô. On axiom systems of propositional calculi, IX. Proc. Japan Acad., Tome 41 (1965) no. 9, pp. 798-800. http://gdmltest.u-ga.fr/item/1195522249/