%0 Journal Article
%T From archives of American Mathematical Society
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1998
%V 53
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1998_53_2_a25/
%G ru
%F RM_1998_53_2_a25