%0 Journal Article
%T Meetings of the St. Petersburg Mathematical Society
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1997
%V 52
%N 6
%U http://geodesic.mathdoc.fr/item/RM_1997_52_6_a32/
%G ru
%F RM_1997_52_6_a32