%0 Journal Article %A A. B. Vasil'eva %T The resemblance between conditionally stable singularly perturbed systems and singularly perturbed systems with a zero characteristic number %J Differencialʹnye uravneniâ %D 1975 %P 1754-1764 %V 11 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1975_11_10_a3/ %G ru %F DE_1975_11_10_a3