%0 Journal Article %A B. Ya. Levit %T Second-order asymptotic optimality and positive solutions of Shr\"odinger's equation %J Teoriâ veroâtnostej i ee primeneniâ %D 1985 %P 309-338 %V 30 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1985_30_2_a7/ %G ru %F TVP_1985_30_2_a7