@article{GDZPPN00210914X,
title = {Cohen-Macaulayness of modules of covariants.},
journal = {Inventiones mathematicae},
volume = {104},
year = {1991},
pages = {389-410},
zbl = {0761.13004},
url = {http://dml.mathdoc.fr/item/GDZPPN00210914X}
}
Van den Bergh, M. Cohen-Macaulayness of modules of covariants.. Inventiones mathematicae, Tome 104 (1991) pp. 389-410. http://gdmltest.u-ga.fr/item/GDZPPN00210914X/