@article{TM_1995_209_a0,
     author = {A. A. Agrachev and R. V. Gamkrelidze},
     title = {On the orbits of groups of diffeomorphisms and flows},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {3--13},
     publisher = {mathdoc},
     volume = {209},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1995_209_a0/}
}