@article{BlumensteinFischerSchubert1997,
  author    = {Blumenstein, Oswald and Fischer, Franka and Schubert, Rudolf},
  title     = {Bodenver{\"a}nderungen durch Abwasser},
  year      = {1997},
  language  = {de}
}
@book{SchubertFischerBlumenstein1995,
  author    = {Schubert, Rudolf and Fischer, Franka and Blumenstein, Oswald},
  title     = {Bodenuntersuchungen auf Standorten mit Kontaminationsverdacht n{\"o}rdlich von Großbeeren "G{\"u}terverkehrszentrum West".},
  publisher = {Univ.},
  address   = {Potsdam},
  pages     = {8 S.},
  year      = {1995},
  language  = {de}
}
@book{BlumensteinGrunewaldSchubert1991,
  author    = {Blumenstein, Oswald and Grunewald, Karsten and Schubert, Rudolf},
  title     = {Das Altlastengebiet Rieselfelder Berlin-S{\"u}d - eine geo{\"o}kologische Herausforderung},
  series = {Potsdamer geographische Forschungen},
  volume    = {1},
  journal   = {Potsdamer geographische Forschungen},
  publisher = {Fachber. Geogr. d. Univ. Potsdam},
  address   = {Potsdam},
  issn      = {0940-9688},
  pages     = {80 S. : Ill., graph. Darst. 1 Kt.},
  year      = {1991},
  language  = {de}
}
@article{BarschBlumensteinSchubert1999,
  author    = {Barsch, Heiner and Blumenstein, Oswald and Schubert, Rudolf},
  title     = {The case of sewage farms south of Berlin},
  year      = {1999},
  language  = {en}
}