%0 Journal Article %A Đorđe Mušicki %T A contribution to the theory of the extended Lagrangian formalism for rheonomic systems %J Theoretical and applied mechanics %D 2009 %P 47 %V 36 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.2298/TAM0901047M/ %R 10.2298/TAM0901047M %G en %F 10_2298_TAM0901047M