%0 Journal Article %A Djordje MuĊĦicki %T Extended Lagrangian formalism for rheonomic systems with variable mass %J Theoretical and applied mechanics %D 2017 %P 115 - 132 %V 44 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAM_2017_44_1_a8/ %F TAM_2017_44_1_a8