%0 Journal Article
%A A. S. Libin
%T To the editors of Uspekhi Matematicheskikh Nauk
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1971
%V 26
%N 5
%U http://geodesic.mathdoc.fr/item/RM_1971_26_5_a24/
%G ru
%F RM_1971_26_5_a24