@article{1183732206, author = {Nelson, Raymond J.}, title = {Weak Simplest Normal Truth Functions}, journal = {J. Symbolic Logic}, volume = {20}, number = {1}, year = {1955}, pages = { 232-234}, language = {en}, url = {http://dml.mathdoc.fr/item/1183732206} }
Nelson, Raymond J. Weak Simplest Normal Truth Functions. J. Symbolic Logic, Tome 20 (1955) no. 1, pp. 232-234. http://gdmltest.u-ga.fr/item/1183732206/