%0 Journal Article %A O. P. Stepanovich %T The influence of exponentially decreasing perturbations on the Demidovich characteristic exponents of diagonal systems %J Differencialʹnye uravneniâ %D 1997 %P 245-248 %V 33 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1997_33_2_a13/ %G ru %F DE_1997_33_2_a13