%0 Journal Article %A Veljko V. Vujičić %A V. V. Kozlov %T ON the stability of the equilibrium in the non-potential forces field %J Theoretical and applied mechanics %D 1989 %P 139 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAM_1989_15_1_a14/ %G en %F TAM_1989_15_1_a14