%0 Journal Article
%T Meetings of the St.~Petersburg Mathematical Society
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1999
%V 54
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1999_54_1_a19/
%G ru
%F RM_1999_54_1_a19