@article{MAN_1978__235_163142,
     author = {Eduardo H. Cattani and Aroldo G. Kaplan},
     title = {Horizontal {SL2-Orbits} in {Flag} {Domains.}},
     journal = {Mathematische Annalen},
     pages = {17--36},
     publisher = {mathdoc},
     volume = {235},
     year = {1978},
     zbl = {0363.32022},
     url = {http://geodesic.mathdoc.fr/item/MAN_1978__235_163142/}
}