@article{Luhmann2005,
  author    = {Luhmann, Hans-Jochen},
  title     = {Verschlusssache {\"O}kologie : Umweltpolitik nach 1945 in Ost und West},
  journal   = {Das Parlament},
  volume    = {55},
  number    = {42},
  pages     = {9},
  year      = {2005},
  language  = {de}
}