@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/