@article{1183731481,
author = {Curry, Haskell B.},
title = {The Permutability of Rules in the Classical Inferential Calculus},
journal = {J. Symbolic Logic},
volume = {17},
number = {1},
year = {1952},
pages = { 245-248},
language = {en},
url = {http://dml.mathdoc.fr/item/1183731481}
}
Curry, Haskell B. The Permutability of Rules in the Classical Inferential Calculus. J. Symbolic Logic, Tome 17 (1952) no. 1, pp. 245-248. http://gdmltest.u-ga.fr/item/1183731481/