@article{1093887830,
author = {Bennett, David W.},
title = {A note on the completeness proof for natural deduction.},
journal = {Notre Dame J. Formal Logic},
volume = {18},
number = {1},
year = {1977},
pages = { 145-146},
language = {en},
url = {http://dml.mathdoc.fr/item/1093887830}
}
Bennett, David W. A note on the completeness proof for natural deduction.. Notre Dame J. Formal Logic, Tome 18 (1977) no. 1, pp. 145-146. http://gdmltest.u-ga.fr/item/1093887830/