%0 Journal Article %A L. M. Fridman %T On singular passages to the limit in case of extension of discontinuous systems %J Differencialʹnye uravneniâ %D 1986 %P 1461-1463 %V 22 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_8_a24/ %G ru %F DE_1986_22_8_a24