@article{MZM_2023_114_6_a12,
     author = {M. B. Karmanova},
     title = {Sub-Riemannian {Co-Area} {Formula} for {Classes} of {Noncontact} {Mappings} of {Carnot} {Groups}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {940--944},
     publisher = {mathdoc},
     volume = {114},
     number = {6},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2023_114_6_a12/}
}