@misc{RM_1966_21_3_a17,
     title = {Meetings of the {Leningrad} {Mathematical} {Society}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1966},
     volume = {21},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1966_21_3_a17/}
}