@article{1093887933, author = {Fitting, Melvin}, title = {A tableau system for propositional S5.}, journal = {Notre Dame J. Formal Logic}, volume = {18}, number = {1}, year = {1977}, pages = { 292-294}, language = {en}, url = {http://dml.mathdoc.fr/item/1093887933} }
Fitting, Melvin. A tableau system for propositional S5.. Notre Dame J. Formal Logic, Tome 18 (1977) no. 1, pp. 292-294. http://gdmltest.u-ga.fr/item/1093887933/