@article{1077230457,
author = {Xu, Xiaoping},
title = {Differential invariants of classical groups},
journal = {Duke Math. J.},
volume = {95},
number = {1},
year = {1998},
pages = { 543-572},
language = {en},
url = {http://dml.mathdoc.fr/item/1077230457}
}
Xu, Xiaoping. Differential invariants of classical groups. Duke Math. J., Tome 95 (1998) no. 1, pp. 543-572. http://gdmltest.u-ga.fr/item/1077230457/