%0 Journal Article %A A. V. Vasilieva %T Asymptotic methods in the theory of ordinary differential equations containing small parameters in front of the higher derivatives %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1963 %P 611-642 %V 3 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1963_3_4_a0/ %G ru %F ZVMMF_1963_3_4_a0