%0 Journal Article %A S. Z. Levendorskii %A B. P. Paneah %T Degenerate elliptic equations and boundary value problems %J Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Fundamental'nye Napravleniya %D 1990 %P 131-200 %V 63 %I mathdoc %U http://geodesic.mathdoc.fr/item/INTF_1990_63_a1/ %G ru %F INTF_1990_63_a1