@book{GroneuerIlling1991,
  author    = {Groneuer, Karl Josef and Illing, Stephan},
  title     = {Neurodermitis - atopische Dermatitis},
  edition   = {1. Aufl.},
  publisher = {Hippokrates Verl.},
  address   = {Stuttgart},
  isbn      = {3-7773-0998-2},
  pages     = {117 S. : graph. Darst.},
  year      = {1991},
  language  = {de}
}
@book{Jarre1991,
  author    = {Jarre, Jan},
  title     = {Aktuelle Probleme von Landwirtschaft und Agrarpolitik im vereinigten Deutschland},
  volume    = {19/91,4},
  edition   = {1. Aufl.},
  publisher = {Evang. Akad. Loccum, Protokollstelle},
  address   = {Rehburg-Loccum},
  isbn      = {3-8172-0491-4},
  pages     = {327 S. : graph. Darst., Kt.},
  year      = {1991},
  language  = {de}
}