%0 Journal Article %A T. Kobayashi %T Criterion for Proper Actions on Homogeneous Spaces of Reductive Groups %J Journal of Lie Theory %D 1996 %P 147-164 %V 6 %N 2 %U http://geodesic.mathdoc.fr/item/JOLT_1996_6_2_a0/ %F JOLT_1996_6_2_a0