@article{MZ_1984__187_173483,
     author = {J\"org Hahn},
     title = {Isoparametric {Hypersurfaces} in the {Pseudo-Riemannian} {Space} {Forms.}},
     journal = {Mathematische Zeitschrift},
     pages = {195--208},
     publisher = {mathdoc},
     volume = {187},
     year = {1984},
     zbl = {0529.53046},
     url = {http://geodesic.mathdoc.fr/item/MZ_1984__187_173483/}
}