@article{SIGMA_2007_3_a43,
     author = {Yuri N. Fedorov},
     title = {A~Discretization of the {Nonholonomic} {Chaplygin} {Sphere} {Problem}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2007},
     volume = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2007_3_a43/}
}