@article{JesselLahmerItzerottetal.2003,
  author    = {Jessel, Beate and Lahmer, Werner and Itzerott, Sibylle and Pf{\"u}tzner, Bernhard},
  title     = {Management in the Havel river basin : building up decision tools for spatial planning},
  year      = {2003},
  language  = {en}
}
@article{BronstertLahmer2000,
  author    = {Bronstert, Axel and Lahmer, Werner},
  title     = {Bewirtschaftungsm{\"o}glichkeiten im Einzugsgebiet der Havel},
  year      = {2000},
  language  = {de}
}