%0 Journal Article %A Friedrich Knop %T On the set of orbits for a Borel subgroup. %J Commentarii mathematici Helvetici %D 1995 %P 285-309 %V 70 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1995__70_3_140370/ %F CMH_1995__70_3_140370