@article{JOLT_2008_18_3_a4,
     author = {C. Miebach},
     title = {Matsuki's {Double} {Coset} {Decomposition} via {Gradient} {Maps}},
     journal = {Journal of Lie Theory},
     pages = {555--580},
     year = {2008},
     volume = {18},
     number = {3},
     zbl = {1171.22003},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2008_18_3_a4/}
}