@article{IM_1987__90_143522,
     author = {F. Knop},
     title = {Ein neuer {Zusammenhang} zwischen einfachen {Gruppen} und einfachen {Singularit\"aten.}},
     journal = {Inventiones mathematicae},
     pages = {579--604},
     publisher = {mathdoc},
     volume = {90},
     year = {1987},
     zbl = {0648.14002},
     url = {http://geodesic.mathdoc.fr/item/IM_1987__90_143522/}
}