%0 Journal Article %A K. Kh. Boimatov %T Coercive estimates and separability for second-order elliptic differential equations %J Doklady Akademii Nauk %D 1988 %P 1033-1036 %V 301 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1988_301_5_a0/ %G ru %F DAN_1988_301_5_a0