@article{MZM_1982_32_2_a8,
     author = {V. V. Rybakov},
     title = {Completeness of modal logics with prefinite width},
     journal = {Matemati\v{c}eskie zametki},
     pages = {223--228},
     publisher = {mathdoc},
     volume = {32},
     number = {2},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1982_32_2_a8/}
}