@article{BUMI_2004_8_7B_1_a3,
     author = {Bonfiglioli, Andrea},
     title = {Homogeneous {Carnot} groups related to sets of vector fields},
     journal = {Bollettino della Unione matematica italiana},
     pages = {79--107},
     publisher = {mathdoc},
     volume = {Ser. 8, 7B},
     number = {1},
     year = {2004},
     zbl = {1178.35140},
     mrnumber = {1878341},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2004_8_7B_1_a3/}
}