%0 Journal Article %A A. B. Vasil'eva %T Conditionally stable singularly perturbed systems with singularities in the boundary conditons %J Differencialʹnye uravneniâ %D 1975 %P 227-238 %V 11 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1975_11_2_a2/ %G ru %F DE_1975_11_2_a2