@article{1214439462, author = {Mitchell, John}, title = {On Carnot-Carath\'eodory metrics}, journal = {J. Differential Geom.}, volume = {21}, number = {1}, year = {1985}, pages = { 35-45}, language = {en}, url = {http://dml.mathdoc.fr/item/1214439462} }
Mitchell, John. On Carnot-Carathéodory metrics. J. Differential Geom., Tome 21 (1985) no. 1, pp. 35-45. http://gdmltest.u-ga.fr/item/1214439462/