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@article{MZM_1986_40_4_a9, author = {A. D. Yashin}, title = {The semantic characterization of modal logical connectives}, journal = {Matemati\v{c}eskie zametki}, pages = {519--526}, publisher = {mathdoc}, volume = {40}, number = {4}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1986_40_4_a9/} }
A. D. Yashin. The semantic characterization of modal logical connectives. Matematičeskie zametki, Tome 40 (1986) no. 4, pp. 519-526. http://geodesic.mathdoc.fr/item/MZM_1986_40_4_a9/