@article{MT_2008_11_1_a5,
     author = {E. A. Plotnikova},
     title = {Sobolev-type integral representations for functions defined on {Carnot} groups},
     journal = {Matemati\v{c}eskie trudy},
     pages = {113--131},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2008_11_1_a5/}
}