@article{IM_1990__101_2_143824,
     author = {Stephen Donkin},
     title = {The normality of closures of conjugacy classes of matrices.},
     journal = {Inventiones mathematicae},
     pages = {717--736},
     publisher = {mathdoc},
     volume = {101},
     number = {2},
     year = {1990},
     zbl = {0822.20045},
     url = {http://geodesic.mathdoc.fr/item/IM_1990__101_2_143824/}
}