@article{1183732307,
author = {Lob, M. H.},
title = {Formal Systems of Constructive Mathematics},
journal = {J. Symbolic Logic},
volume = {21},
number = {1},
year = {1956},
pages = { 63-75},
language = {en},
url = {http://dml.mathdoc.fr/item/1183732307}
}
Lob, M. H. Formal Systems of Constructive Mathematics. J. Symbolic Logic, Tome 21 (1956) no. 1, pp. 63-75. http://gdmltest.u-ga.fr/item/1183732307/