@article{TRSPY_2007_258_a2,
     author = {A. A. Agrachev},
     title = {Rolling {Balls} and {Octonions}},
     journal = {Informatics and Automation},
     pages = {17--27},
     publisher = {mathdoc},
     volume = {258},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2007_258_a2/}
}