%0 Journal Article %A N. S. Kukushkin %T A new sufficient condition for the existence of equilibrium in the %J Doklady Akademii Nauk %D 1993 %P 674-676 %V 331 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1993_331_6_a5/ %G ru %F DAN_1993_331_6_a5