@article{1183742434,
author = {Tennant, Neil},
title = {Natural Deduction and Sequent Calculus for Intuitionistic Relevant Logic},
journal = {J. Symbolic Logic},
volume = {52},
number = {1},
year = {1987},
pages = { 665-680},
language = {en},
url = {http://dml.mathdoc.fr/item/1183742434}
}
Tennant, Neil. Natural Deduction and Sequent Calculus for Intuitionistic Relevant Logic. J. Symbolic Logic, Tome 52 (1987) no. 1, pp. 665-680. http://gdmltest.u-ga.fr/item/1183742434/