@article{DAN_1995_341_2_a1,
     author = {A.N. Kanatnikov and A. P. Krishchenko},
     title = {Symmetries of nonlinear controlled systems},
     journal = {Doklady Akademii Nauk},
     pages = {155--157},
     publisher = {mathdoc},
     volume = {341},
     number = {2},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1995_341_2_a1/}
}