%0 Journal Article
%T Meetings of the Moscow Mathematical Society
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1971
%V 26
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1971_26_4_a8/
%G ru
%F RM_1971_26_4_a8