@article{MAN_1980__251_163431,
     author = {Horst Kn\"orrer},
     title = {Die {Singularit\"aten} vom {Typ} {D.}},
     journal = {Mathematische Annalen},
     pages = {135--150},
     publisher = {mathdoc},
     volume = {251},
     year = {1980},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1980__251_163431/}
}