%0 Journal Article %A Yu. I. Neimark %A N. A. Fufaev %T On the stability of equilibrium states of non-holonomic systems %J Doklady Akademii Nauk %D 1965 %P 781-784 %V 160 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_160_4_a11/ %G ru %F DAN_1965_160_4_a11