%0 Journal Article
%T Meetings of the Moscow Mathematical Society
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1970
%V 25
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1970_25_1_a4/
%G ru
%F RM_1970_25_1_a4