@article{AL_1981_20_2_a3,
     author = {A. Yu. Muravitskii},
     title = {Strong equivalence on an intuitionistic {Kripke} model and},
     journal = {Algebra i logika},
     pages = {165--182},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1981_20_2_a3/}
}