@misc{AL_1989_28_1_a9,
     title = {Sessions of the seminar {{\textquotedblleft}Algebra} i {Logika{\textquotedblright}}},
     journal = {Algebra i logika},
     pages = {120},
     year = {1989},
     volume = {28},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1989_28_1_a9/}
}