%0 Journal Article
%T Joint sessions of the Petrovskii Seminar on differential equations and mathematical problems of physics and of the Moscow Mathematical Society (seventeenth session, 24--27~January~1995)
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1995
%P 731-809
%V 50
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1995_50_4_a3/
%G en
%F RM_1995_50_4_a3