@article{1183735334, author = {Fitch, Frederic B.}, title = {Review: E. J. Lemmon, Quantifier Rules and Natural Deduction}, journal = {J. Symbolic Logic}, volume = {31}, number = {1}, year = {1966}, language = {en}, url = {http://dml.mathdoc.fr/item/1183735334} }
Fitch, Frederic B. Review: E. J. Lemmon, Quantifier Rules and Natural Deduction. J. Symbolic Logic, Tome 31 (1966) no. 1, . http://gdmltest.u-ga.fr/item/1183735334/