@article{JRAM_1978__0303_0304_152048,
     author = {Wim H. Hesselink},
     title = {Uniform instability in reductive groups.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {74--96},
     publisher = {mathdoc},
     volume = {0303_0304},
     year = {1978},
     zbl = {0386.20020},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1978__0303_0304_152048/}
}