%0 Journal Article %A A. S. Makin %T Sharp estimates, with respect to order, for root functions of a second-order elliptic operator %J Differencialʹnye uravneniâ %D 1992 %P 97-110 %V 28 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1992_28_1_a11/ %G ru %F DE_1992_28_1_a11