%0 Journal Article %A A. G. Surkov %T Exact lower and upper bounds of the highest and lowest characteristic exponents of a two-dimensional system with bounded perturbations %J Differencialʹnye uravneniâ %D 1983 %P 2065-2071 %V 19 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1983_19_12_a5/ %G ru %F DE_1983_19_12_a5