@article{1183383743,
author = {Chwistek, L. and Hetper, W.},
title = {New Foundation of Formal Metamathematics},
journal = {J. Symbolic Logic},
volume = {3},
number = {1},
year = {1938},
pages = { 1-36},
language = {en},
url = {http://dml.mathdoc.fr/item/1183383743}
}
Chwistek, L.; Hetper, W. New Foundation of Formal Metamathematics. J. Symbolic Logic, Tome 3 (1938) no. 1, pp. 1-36. http://gdmltest.u-ga.fr/item/1183383743/