%0 Journal Article %A S. Z. Levendorskii %T Coercivity of degenerate elliptic operators %J Doklady Akademii Nauk %D 1988 %P 29-31 %V 298 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1988_298_1_a5/ %G ru %F DAN_1988_298_1_a5