@article{10_2298_TAM0901047M, author = {{\DJ}or{\dj}e Mu\v{s}icki}, title = {A contribution to the theory of the extended {Lagrangian} formalism for rheonomic systems}, journal = {Theoretical and applied mechanics}, pages = {47 }, publisher = {mathdoc}, volume = {36}, number = {1}, year = {2009}, doi = {10.2298/TAM0901047M}, zbl = {1224.70022}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.2298/TAM0901047M/} }