@article{1183744250,
author = {Komori, Yuichi and Hirokawa, Sachio},
title = {The Number of Proofs for a BCK-Formula},
journal = {J. Symbolic Logic},
volume = {58},
number = {1},
year = {1993},
pages = { 626-628},
language = {en},
url = {http://dml.mathdoc.fr/item/1183744250}
}
Komori, Yuichi; Hirokawa, Sachio. The Number of Proofs for a BCK-Formula. J. Symbolic Logic, Tome 58 (1993) no. 1, pp. 626-628. http://gdmltest.u-ga.fr/item/1183744250/