@article{1093634728,
author = {Williamson, Timothy},
title = {Some admissible rules in nonnormal modal systems.},
journal = {Notre Dame J. Formal Logic},
volume = {34},
number = {4},
year = {1993},
pages = { 378-400},
language = {en},
url = {http://dml.mathdoc.fr/item/1093634728}
}
Williamson, Timothy. Some admissible rules in nonnormal modal systems.. Notre Dame J. Formal Logic, Tome 34 (1993) no. 4, pp. 378-400. http://gdmltest.u-ga.fr/item/1093634728/