@article{1183744624, author = {Takano, Mitio}, title = {Subformula Property in Many-Valued Modal Logics}, journal = {J. Symbolic Logic}, volume = {59}, number = {1}, year = {1994}, pages = { 1263-1273}, language = {en}, url = {http://dml.mathdoc.fr/item/1183744624} }
Takano, Mitio. Subformula Property in Many-Valued Modal Logics. J. Symbolic Logic, Tome 59 (1994) no. 1, pp. 1263-1273. http://gdmltest.u-ga.fr/item/1183744624/