@phdthesis{Voss1998,
  author    = {Voss, Henning U.},
  title     = {Nichtlineare statistische Methoden zur Datenanalyse},
  pages     = {126 S. : graph. Darst.},
  year      = {1998},
  language  = {de}
}
@phdthesis{Voss1999,
  author    = {Voss, Henning U.},
  title     = {Nichtlineare statistische Methoden zur Datenanalyse},
  series = {Stoffdynamik in Geosystemen},
  volume    = {3},
  journal   = {Stoffdynamik in Geosystemen},
  publisher = {Selbstverl. der Arbeitsgruppe Stoffdynamik in Geosystemen},
  address   = {Potsdam},
  issn      = {0949-4731},
  pages     = {158 S. : graph. Darst.},
  year      = {1999},
  language  = {de}
}