@article{1183142130, author = {Lewis, C. I.}, title = {Emch's Calculus and Strict Implication}, journal = {J. Symbolic Logic}, volume = {1}, number = {1}, year = {1936}, pages = { 77-86}, language = {en}, url = {http://dml.mathdoc.fr/item/1183142130} }
Lewis, C. I. Emch's Calculus and Strict Implication. J. Symbolic Logic, Tome 1 (1936) no. 1, pp. 77-86. http://gdmltest.u-ga.fr/item/1183142130/