%0 Journal Article %A Yu. Ya. Belov %T On some systems of linear differential equations with a small parameter %J Doklady Akademii Nauk %D 1976 %P 1037-1040 %V 231 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1976_231_5_a1/ %G ru %F DAN_1976_231_5_a1