%0 Journal Article
%T Meetings of the Leningrad Mathematical Society
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1985
%V 40
%N 2
%U http://geodesic.mathdoc.fr/item/RM_1985_40_2_a29/
%G ru
%F RM_1985_40_2_a29