@article{Sachs2000,
  author    = {Sachs, Wolfgang},
  title     = {Zeppelin oder Transrapid? : M{\"o}glichkeiten, Notwendigkeiten und Grenzen der {\"O}kologie},
  journal   = {Universitas},
  volume    = {55},
  number    = {647},
  pages     = {446 -- 453},
  year      = {2000},
  language  = {de}
}