@article{MV_1968_20_3_a12,
     author = {L. S. Rusov},
     title = {Geometrization of  differential equations of perturbed motion of sceleronomic nonconservative systems},
     journal = {Matemati\v{c}ki vesnik},
     pages = {333 },
     year = {1968},
     volume = {20},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/MV_1968_20_3_a12/}
}