%0 Journal Article %A R. A. Prokhorova %T An estimate of the jump in the highest exponent of a linear system under exponential perturbations %J Differencialʹnye uravneniâ %D 1976 %P 475-483 %V 12 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1976_12_3_a7/ %G ru %F DE_1976_12_3_a7