%0 Journal Article %A E. V. Voskresenskii %T III International Conference “Differential Equations and Their Applications” %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1998 %V 53 %N 6 %U http://geodesic.mathdoc.fr/item/RM_1998_53_6_a25/ %G ru %F RM_1998_53_6_a25