%0 Journal Article %A N. G. Yarovoi %T The stability of an automatic control system with variable structure. %J Differencialʹnye uravneniâ %D 1968 %P 1980-1990 %V 4 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1968_4_11_a5/ %G ru %F DE_1968_4_11_a5