@article{DE_2004_40_4_a7,
     author = {L. D'Ambrosio},
     title = {Some {Hardy} {Inequalities} on the {Heisenberg} {Group}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {509--521},
     publisher = {mathdoc},
     volume = {40},
     number = {4},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2004_40_4_a7/}
}