@article{MAN_1990__286_1-3_164652,
     author = {J\"org Winkelmann},
     title = {On free holomorphic {C-actions} on {Cn} and homogeneous {Stein} manifolds.},
     journal = {Mathematische Annalen},
     pages = {593--612},
     publisher = {mathdoc},
     volume = {286},
     number = {1-3},
     year = {1990},
     zbl = {0708.32004},
     url = {http://geodesic.mathdoc.fr/item/MAN_1990__286_1-3_164652/}
}