@book{Barthel1997,
  author    = {Barthel, Helmut},
  title     = {Wieviel Kalkstein wird zur Herstellung von einem Liter cola gebraucht},
  year      = {1997},
  language  = {de}
}
@book{Barthel1997,
  author    = {Barthel, Helmut},
  title     = {Kann der Sch{\"u}ler immer schl{\"u}ssige Folgerungen aus Experimentalergebnisse ableiten?},
  year      = {1997},
  language  = {de}
}
@book{Bechmann1997,
  author    = {Bechmann, Wolfgang},
  title     = {Neue Cocktails nur mit bew{\"a}hrten Rezepten? : Beitr{\"a}ge zur Aufkl{\"a}rung hemerober Geosysteme},
  series = {Stoffdynamik in Geosystemen},
  volume    = {2},
  journal   = {Stoffdynamik in Geosystemen},
  publisher = {Selbstverl. der Arbeitsgruppe Stoffdynamik in Geosystemen},
  address   = {Potsdam},
  pages     = {87 S.},
  year      = {1997},
  language  = {de}
}
@book{Duvinage1997,
  author    = {Duvinage, Brigitte},
  title     = {Stoffstr{\"o}me},
  year      = {1997},
  language  = {de}
}
@book{RitschelMahapatraZuelicke1997,
  author    = {Ritschel, Thomas and Mahapatra, Susanta and Z{\"u}licke, Lutz},
  title     = {Classical trajectory calculations for inelastic scattering of protons by N2 Molecules},
  series = {Technical Report / Institute of Physical and Theoretical Chemistry, Potsdam},
  volume    = {1997, 01},
  journal   = {Technical Report / Institute of Physical and Theoretical Chemistry, Potsdam},
  publisher = {Univ.},
  address   = {Potsdam},
  pages     = {11 S., [10] S. : graph. Darst.},
  year      = {1997},
  language  = {en}
}
@book{OPUS4-23691,
  title     = {Stoffstr{\"o}me und Textilien},
  editor    = {Duvinage, Brigitte},
  year      = {1997},
  language  = {de}
}
@book{OPUS4-24472,
  title     = {Chitin handbook},
  editor    = {Muzzarelli, A. A. Riccardo and Peter, Martin G.},
  publisher = {Atec Edizioni},
  address   = {Grottammare},
  isbn      = {88-86889-01-1},
  pages     = {528 S.},
  year      = {1997},
  language  = {de}
}