@article{JLT_1996_6_2_a0,
     author = { T. Kobayashi},
     title = {Criterion for {Proper} {Actions} on {Homogeneous} {Spaces} of {Reductive} {Groups}},
     journal = {Journal of Lie theory},
     pages = {147--164},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {1996},
     url = {http://geodesic.mathdoc.fr/item/JLT_1996_6_2_a0/}
}