@article{1093891211, author = {White, Bruce}, title = {A note on natural deduction in many-valued logic.}, journal = {Notre Dame J. Formal Logic}, volume = {15}, number = {1}, year = {1974}, pages = { 167-168}, language = {en}, url = {http://dml.mathdoc.fr/item/1093891211} }
White, Bruce. A note on natural deduction in many-valued logic.. Notre Dame J. Formal Logic, Tome 15 (1974) no. 1, pp. 167-168. http://gdmltest.u-ga.fr/item/1093891211/