%0 Journal Article
%T Joint sessions of the Petrovskii Seminar on differential equations and related problems and the Moscow Mathematical Society. In honour of the 95th anniversary of~I.\,G.~Petrovskii (eighteenth session, 25--29 April~1996)
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1996
%P 911-998
%V 51
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1996_51_5_a2/
%G en
%F RM_1996_51_5_a2