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@article{DAN_1984_275_3_a4, author = {M. V. Zakharyaschev}, title = {Normal modal logics containing $\mathrm{S}4$}, journal = {Doklady Akademii Nauk}, pages = {537--540}, publisher = {mathdoc}, volume = {275}, number = {3}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1984_275_3_a4/} }
M. V. Zakharyaschev. Normal modal logics containing $\mathrm{S}4$. Doklady Akademii Nauk, Tome 275 (1984) no. 3, pp. 537-540. http://geodesic.mathdoc.fr/item/DAN_1984_275_3_a4/