@misc{OPUS4-4607,
  title     = {Wuppertal Bulletin zu Instrumenten des Klima- und Umweltschutzes : Jg. 6, Nr. 1},
  publisher = {Wuppertal Institut f{\"u}r Klima, Umwelt, Energie},
  address   = {Wuppertal},
  issn      = {1618-3959},
  pages     = {22},
  year      = {2003},
  language  = {de}
}