@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/