%0 Journal Article
%A A. G. Surkov
%T Sharp upper and lower bounds for characteristic indices of a two-dimensional system with bounded perturbations
%J Differencialʹnye uravneniâ
%D 1983
%P 1534-1541
%V 19
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1983_19_9_a8/
%G ru
%F DE_1983_19_9_a8