%0 Journal Article %A Ranislav Bulatović %T An nonstability criterion of equlibrium for nonholonomic system %J Theoretical and applied mechanics %D 1992 %P 21 %V 18 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAM_1992_18_1_a2/ %G en %F TAM_1992_18_1_a2