%0 Journal Article %A I. V. Gaishun %T Stability of a system that is described by differential equations and constraints of the type of equalities %J Differencialʹnye uravneniâ %D 1973 %P 2245-2247 %V 9 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1973_9_12_a17/ %G ru %F DE_1973_9_12_a17