%0 Journal Article
%A A. Yu. Levin
%T Some questions on the asymptotics for ordinary linear differential equations
%J Doklady Akademii Nauk
%D 1975
%P 503-506
%V 225
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1975_225_3_a5/
%G ru
%F DAN_1975_225_3_a5