@article{1183736775, author = {Bull, R. A.}, title = {On Modal Logic with Propositional Quantifiers}, journal = {J. Symbolic Logic}, volume = {34}, number = {1}, year = {1969}, pages = { 257-263}, language = {en}, url = {http://dml.mathdoc.fr/item/1183736775} }
Bull, R. A. On Modal Logic with Propositional Quantifiers. J. Symbolic Logic, Tome 34 (1969) no. 1, pp. 257-263. http://gdmltest.u-ga.fr/item/1183736775/