@article{ND_2012_8_1_a3,
     author = {V. V. Kozlov},
     title = {On invariant manifolds of nonholonomic systems},
     journal = {Russian journal of nonlinear dynamics},
     pages = {57--69},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2012_8_1_a3/}
}