@article{JEMS_2009_11_2_a0,
     author = {Ludovic Rifford and Emmanuel Tr\'elat},
     title = {On the stabilization problem for nonholonomic distributions},
     journal = {Journal of the European Mathematical Society},
     pages = {223--255},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {2009},
     doi = {10.4171/jems/148},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/148/}
}