@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/