@article{MZM_1985_38_1_a17,
     author = {A. D. Yashin},
     title = {Semantic characterization of intuitionistic logical connectives},
     journal = {Matemati\v{c}eskie zametki},
     pages = {157--166},
     publisher = {mathdoc},
     volume = {38},
     number = {1},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1985_38_1_a17/}
}