@article{1093890717, author = {Hazen, Allen}, title = {Semantics for $S4.2$.}, journal = {Notre Dame J. Formal Logic}, volume = {13}, number = {3}, year = {1972}, pages = { 527-528}, language = {en}, url = {http://dml.mathdoc.fr/item/1093890717} }
Hazen, Allen. Semantics for $S4.2$.. Notre Dame J. Formal Logic, Tome 13 (1972) no. 3, pp. 527-528. http://gdmltest.u-ga.fr/item/1093890717/