%0 Journal Article %A S. A. Mazanik %T Asymptotic equivalence under perturbations of diagonal systems %J Differencialʹnye uravneniâ %D 1994 %P 728 %V 30 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1994_30_4_a19/ %G ru %F DE_1994_30_4_a19