@article{BerloSeifried2003,
  author    = {Berlo, Kurt and Seifried, Dieter},
  title     = {B{\"u}rger-Contracting},
  journal   = {Raumplanung},
  number    = {107},
  pages     = {87 -- 88},
  year      = {2003},
  language  = {de}
}