@article{MT_2012_15_2_a3,
     author = {A. V. Greshnov},
     title = {Proof of {Gromov's} theorem on homogeneous nilpotent approximation for vector fields of class~$C^1$},
     journal = {Matemati\v{c}eskie trudy},
     pages = {72--88},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2012_15_2_a3/}
}