%0 Journal Article
%A N. A. Izobov
%A O. P. Stepanovich
%T Exponentially decreasing perturbations that preserve the characteristic exponents of a linear diagonal system
%J Differencialʹnye uravneniâ
%D 1990
%P 934-943
%V 26
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1990_26_6_a2/
%G ru
%F DE_1990_26_6_a2