@techreport{Spangenberg1994,
  type      = {Working Paper},
  author    = {Spangenberg, Joachim H.},
  title     = {Weniger w{\"a}re mehr : durch H{\"o}hen und Tiefen - die Erfolgsgeschichte des {"}Gr{\"u}nen Punkts{"}},
  series    = {Wuppertal Papers},
  volume    = {15},
  institution = {Wuppertal Institut f{\"u}r Klima, Umwelt, Energie},
  address   = {Wuppertal},
  pages     = {19},
  year      = {1994},
  language  = {de}
}