%0 Journal Article %A Veljko A. Vujičić %T On the energy conservation theorem for the system with rheonomous constraints %J Theoretical and applied mechanics %D 1980 %P 133 %V 6 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAM_1980_6_1_a11/ %G en %F TAM_1980_6_1_a11