%0 Journal Article
%A I. V. Kamenev
%T On an asymptotic formula of Hartman in the theory of second-order linear equations
%J Differencialʹnye uravneniâ
%D 1987
%P 348-350
%V 23
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1987_23_2_a21/
%G ru
%F DE_1987_23_2_a21