@article{JLT_2008_18_1_JLT_2008_18_1_a6,
     author = {G. Mar� Beffa and J. A. Sanders },
     title = {Transvection and {Differential} {Invariants} of {Parametrized} {Curves}},
     journal = {Journal of Lie theory},
     pages = {93--123},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {2008},
     url = {http://geodesic.mathdoc.fr/item/JLT_2008_18_1_JLT_2008_18_1_a6/}
}