@article{1195520804, author = {Tanaka, Sh\^otar\^o}, title = {Le\'sniewski's protothetics $S1$, $S2$, III}, journal = {Proc. Japan Acad.}, volume = {45}, number = {8}, year = {1969}, pages = { 263-265}, language = {en}, url = {http://dml.mathdoc.fr/item/1195520804} }
Tanaka, Shôtarô. Leśniewski's protothetics $S1$, $S2$, III. Proc. Japan Acad., Tome 45 (1969) no. 8, pp. 263-265. http://gdmltest.u-ga.fr/item/1195520804/