@misc{RM_1978_33_6_a30,
     title = {Meetings of the {Leningrad} {Mathematical} {Society}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1978},
     volume = {33},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1978_33_6_a30/}
}