@article{1093882415,
author = {Cleave, J. P.},
title = {The axiomatisation of theories of material necessity.},
journal = {Notre Dame J. Formal Logic},
volume = {20},
number = {1},
year = {1979},
pages = { 180-190},
language = {en},
url = {http://dml.mathdoc.fr/item/1093882415}
}
Cleave, J. P. The axiomatisation of theories of material necessity.. Notre Dame J. Formal Logic, Tome 20 (1979) no. 1, pp. 180-190. http://gdmltest.u-ga.fr/item/1093882415/