@article{PIM_2012_N_S_91_105_a6,
     author = {Bo\v{z}idar Jovanovi\'c},
     title = {On the {Principle} of {Stationary} {Isoenergetic} {Action}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {63 },
     publisher = {mathdoc},
     volume = {_N_S_91},
     number = {105},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_2012_N_S_91_105_a6/}
}