@article{MZ_1972__126_171739,
     author = {G\"unter K\"ohler},
     title = {Der {Normalisator} von {Hilbert-Siegeleschen} {Stufengruppen.}},
     journal = {Mathematische Zeitschrift},
     pages = {247--274},
     publisher = {mathdoc},
     volume = {126},
     year = {1972},
     url = {http://geodesic.mathdoc.fr/item/MZ_1972__126_171739/}
}