@article{JLT_2009_19_1_JLT_2009_19_1_a3,
     author = {P. J. Olver },
     title = {Differential {Invariants} of {Maximally} {Symmetric} {Submanifolds}},
     journal = {Journal of Lie theory},
     pages = {79--99},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {2009},
     url = {http://geodesic.mathdoc.fr/item/JLT_2009_19_1_JLT_2009_19_1_a3/}
}