%0 Journal Article %A V. I. Uskov %T Asymptotic solution of first-order equation with small parameter under the derivative with perturbed operator %J Vestnik rossijskih universitetov. Matematika %D 2018 %P 784-796 %V 23 %N 124 %I mathdoc %U http://geodesic.mathdoc.fr/item/VTAMU_2018_23_124_a21/ %G ru %F VTAMU_2018_23_124_a21