@article{1183493758,
author = {Langford, C. H.},
title = {Hilbert and Ackermann on Mathematical Logic},
journal = {Bull. Amer. Math. Soc.},
volume = {36},
number = {11},
year = {1930},
pages = { 22-25},
language = {en},
url = {http://dml.mathdoc.fr/item/1183493758}
}
Langford, C. H. Hilbert and Ackermann on Mathematical Logic. Bull. Amer. Math. Soc., Tome 36 (1930) no. 11, pp. 22-25. http://gdmltest.u-ga.fr/item/1183493758/