%0 Journal Article
%A V. V. Kozlov
%T On the instability of equilibrium in a~potential field
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1981
%P 256-257
%V 36
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1981_36_3_a14/
%G en
%F RM_1981_36_3_a14