@article{1183736773,
author = {Cresswell, M. J.},
title = {A Conjunctive Normal Form For S3.5},
journal = {J. Symbolic Logic},
volume = {34},
number = {1},
year = {1969},
pages = { 253-255},
language = {en},
url = {http://dml.mathdoc.fr/item/1183736773}
}
Cresswell, M. J. A Conjunctive Normal Form For S3.5. J. Symbolic Logic, Tome 34 (1969) no. 1, pp. 253-255. http://gdmltest.u-ga.fr/item/1183736773/