@article{TAM_2017_44_1_a8,
     author = {Djordje Mu\v{s}icki},
     title = {Extended {Lagrangian} formalism for rheonomic systems with variable mass},
     journal = {Theoretical and applied mechanics},
     pages = {115 - 132},
     publisher = {mathdoc},
     volume = {44},
     number = {1},
     year = {2017},
     url = {http://geodesic.mathdoc.fr/item/TAM_2017_44_1_a8/}
}