@article{VNGU_2013_13_4_a1,
     author = {S. G. Basalaev},
     title = {One-Dimensional {Level} {Sets} of $hc${-Differentiable} {Mappings} of {Carnot--Carath\'eodory} {Spaces}},
     journal = {Sibirskij \v{z}urnal \v{c}istoj i prikladnoj matematiki},
     pages = {16--36},
     publisher = {mathdoc},
     volume = {13},
     number = {4},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VNGU_2013_13_4_a1/}
}