@article{MZ_1966__91_170530,
     author = {Gerd Wittstock},
     title = {\"Uber {Zerlegungsvarianten} indefiniter {Metriken.}},
     journal = {Mathematische Zeitschrift},
     pages = {421--430},
     publisher = {mathdoc},
     volume = {91},
     year = {1966},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1966__91_170530/}
}