@article{JLT_2005_15_1_JLT_2005_15_1_a23,
     author = {B. Warhurst },
     title = {Jet {Spaces} as {Nonrigid} {Carnot} {Groups}},
     journal = {Journal of Lie theory},
     pages = {341--356},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {2005},
     url = {http://geodesic.mathdoc.fr/item/JLT_2005_15_1_JLT_2005_15_1_a23/}
}