@techreport{HelfrichKuhlenSachsetal.2009,
  author    = {Helfrich, Silke and Kuhlen, Rainer and Sachs, Wolfgang and Siefkes, Christian},
  title     = {Gemeing{\"u}ter - Wohlstand durch Teilen},
  institution = {Heinrich-B{\"o}ll-Stiftung},
  address   = {Berlin},
  isbn      = {978-3-86928-020-2},
  pages     = {48},
  year      = {2009},
  language  = {de}
}