%0 Journal Article %A S. A. Lomov %T Sharpening the concept of an asymptotic series for singularly %J Doklady Akademii Nauk %D 1990 %P 1047-1050 %V 310 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_310_5_a4/ %G ru %F DAN_1990_310_5_a4