%0 Journal Article %A Yu. P. Boglaev %T The generalized Frobenius formula in singularly perturbed linear equations %J Doklady Akademii Nauk %D 1979 %P 528-531 %V 247 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1979_247_3_a2/ %G ru %F DAN_1979_247_3_a2