%0 Journal Article
%T Meetings of the Leningrad Mathematical Society
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1992
%V 47
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1992_47_3_a25/
%G ru
%F RM_1992_47_3_a25