@article{CMH_1986__61_140072,
     author = {S.G. Dani},
     title = {Bounded orbits of flows on homogeneous spaces.},
     journal = {Commentarii mathematici Helvetici},
     pages = {636--660},
     publisher = {mathdoc},
     volume = {61},
     year = {1986},
     zbl = {0627.22013},
     url = {http://geodesic.mathdoc.fr/item/CMH_1986__61_140072/}
}