%0 Journal Article
%T Meetings of the Leningrad Mathematical Society
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1980
%V 35
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1980_35_1_a21/
%G ru
%F RM_1980_35_1_a21