@article{1183734582,
author = {Drake, F. R.},
title = {On McKinsey's Syntatical Characterizations of Systems of Modal Logic},
journal = {J. Symbolic Logic},
volume = {27},
number = {1},
year = {1962},
pages = { 400-406},
language = {en},
url = {http://dml.mathdoc.fr/item/1183734582}
}
Drake, F. R. On McKinsey's Syntatical Characterizations of Systems of Modal Logic. J. Symbolic Logic, Tome 27 (1962) no. 1, pp. 400-406. http://gdmltest.u-ga.fr/item/1183734582/