@article{1183732117, author = {Nelson, Raymond J.}, title = {Simplest Normal Truth Functions}, journal = {J. Symbolic Logic}, volume = {20}, number = {1}, year = {1955}, pages = { 105-108}, language = {en}, url = {http://dml.mathdoc.fr/item/1183732117} }
Nelson, Raymond J. Simplest Normal Truth Functions. J. Symbolic Logic, Tome 20 (1955) no. 1, pp. 105-108. http://gdmltest.u-ga.fr/item/1183732117/