@article{1183740779, author = {Nagle, Michael C.}, title = {The Decidability of Normal $K5$ Logics}, journal = {J. Symbolic Logic}, volume = {46}, number = {1}, year = {1981}, pages = { 319-328}, language = {en}, url = {http://dml.mathdoc.fr/item/1183740779} }
Nagle, Michael C. The Decidability of Normal $K5$ Logics. J. Symbolic Logic, Tome 46 (1981) no. 1, pp. 319-328. http://gdmltest.u-ga.fr/item/1183740779/