@article{1093891400,
author = {Weaver, George and Corcoran, John},
title = {Logical consequence in modal logic. II. Some semantic systems for ${\rm S}4$.},
journal = {Notre Dame J. Formal Logic},
volume = {15},
number = {1},
year = {1974},
pages = { 370-378},
language = {en},
url = {http://dml.mathdoc.fr/item/1093891400}
}
Weaver, George; Corcoran, John. Logical consequence in modal logic. II. Some semantic systems for ${\rm S}4$.. Notre Dame J. Formal Logic, Tome 15 (1974) no. 1, pp. 370-378. http://gdmltest.u-ga.fr/item/1093891400/