@article{1093894153,
author = {Chapin, E. William},
title = {Gentzen-like systems for partial propositional calculi. I.},
journal = {Notre Dame J. Formal Logic},
volume = {12},
number = {1},
year = {1971},
pages = { 75-80},
language = {en},
url = {http://dml.mathdoc.fr/item/1093894153}
}
Chapin, E. William. Gentzen-like systems for partial propositional calculi. I.. Notre Dame J. Formal Logic, Tome 12 (1971) no. 1, pp. 75-80. http://gdmltest.u-ga.fr/item/1093894153/