@article{1183739272,
author = {Urquhart, Alasdair},
title = {Implicational Formulas in Intuitionistic Logic},
journal = {J. Symbolic Logic},
volume = {39},
number = {1},
year = {1974},
pages = { 661-664},
language = {en},
url = {http://dml.mathdoc.fr/item/1183739272}
}
Urquhart, Alasdair. Implicational Formulas in Intuitionistic Logic. J. Symbolic Logic, Tome 39 (1974) no. 1, pp. 661-664. http://gdmltest.u-ga.fr/item/1183739272/