%0 Journal Article
%T Meetings of the St.~Petersburg Mathematical Society
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 2005
%P 385-388
%V 60
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_2005_60_2_a22/
%G en
%F RM_2005_60_2_a22