@article{MAN_1981__258_163600,
     author = {Wolfgang Henke},
     title = {Isometric {Immersions} of n-dim. {Hyperbolic} {Spaces} into (4n?3)-dim. {Standard} {Spheres} and {Hyperbolic} {Spaces.}},
     journal = {Mathematische Annalen},
     pages = {341--348},
     publisher = {mathdoc},
     volume = {258},
     year = {1981},
     zbl = {0465.53035},
     url = {http://geodesic.mathdoc.fr/item/MAN_1981__258_163600/}
}