@article{1195522035, author = {Tanaka, Sh\^otar\^o}, title = {On axiom systems of propositional calculi, XX}, journal = {Proc. Japan Acad.}, volume = {42}, number = {5}, year = {1966}, pages = { 361-363}, language = {en}, url = {http://dml.mathdoc.fr/item/1195522035} }
Tanaka, Shôtarô. On axiom systems of propositional calculi, XX. Proc. Japan Acad., Tome 42 (1966) no. 5, pp. 361-363. http://gdmltest.u-ga.fr/item/1195522035/