@article{1183732391, author = {Ackermann, Wilhelm}, title = {Begrundung Einer Strengen Implikation}, journal = {J. Symbolic Logic}, volume = {21}, number = {1}, year = {1956}, pages = { 113-128}, language = {de}, url = {http://dml.mathdoc.fr/item/1183732391} }
Ackermann, Wilhelm. Begrundung Einer Strengen Implikation. J. Symbolic Logic, Tome 21 (1956) no. 1, pp. 113-128. http://gdmltest.u-ga.fr/item/1183732391/