@techreport{itb3108,
  author = {Garrelts, H.},
  title = {20 Jahre Umweltvereinigung},
  year = {2010},
  series = {artec-papers},
  number = {169 – in der SuUB erhältlich / available at SuUB},
  publisher = {Universität Bremen},
  address = {Bremen},
  language = {de},
}