@incollection{BleischwitzNerger2005,
  author    = {Bleischwitz, Raimund and Nerger, Matthias},
  title     = {Faktor Vier : zwei Praxisbeispiele},
  booktitle = {Jahrbuch {\"O}kologie 2006},
  editor    = {Altner, G{\"u}nter},
  publisher = {Beck},
  address   = {M{\"u}nchen},
  pages     = {182 -- 189},
  year      = {2005},
  language  = {de}
}