@article{DAN_1984_278_5_a2,
     author = {V. Ya. Gershkovich},
     title = {Two-sided estimates of metrics generated by absolutely nonholonomic distributions on {Riemannian} manifolds},
     journal = {Doklady Akademii Nauk},
     pages = {1040--1044},
     publisher = {mathdoc},
     volume = {278},
     number = {5},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_278_5_a2/}
}