@article{GDZPPN00210203X,
title = {Inequalities defining orbit spaces.},
journal = {Inventiones mathematicae},
volume = {82},
year = {1985},
pages = {539-554},
zbl = {0578.14010},
url = {http://dml.mathdoc.fr/item/GDZPPN00210203X}
}
Procesi, Claudio; Schwarz, Gerald. Inequalities defining orbit spaces.. Inventiones mathematicae, Tome 82 (1985) pp. 539-554. http://gdmltest.u-ga.fr/item/GDZPPN00210203X/