@article{1093635240,
author = {Bellissima, Fabio},
title = {Infinite sets of nonequivalent modalities.},
journal = {Notre Dame J. Formal Logic},
volume = {30},
number = {2},
year = {1989},
pages = { 574-582},
language = {en},
url = {http://dml.mathdoc.fr/item/1093635240}
}
Bellissima, Fabio. Infinite sets of nonequivalent modalities.. Notre Dame J. Formal Logic, Tome 30 (1989) no. 2, pp. 574-582. http://gdmltest.u-ga.fr/item/1093635240/