@article{IM_1976__36_142419,
     author = {Robert Steinberg},
     title = {On the {Desingularization} of the {Unipotent} {Variety.}},
     journal = {Inventiones mathematicae},
     pages = {209--224},
     year = {1976},
     volume = {36},
     zbl = {0352.20035},
     url = {http://geodesic.mathdoc.fr/item/IM_1976__36_142419/}
}