@article{HebelBillionJohaenning2011,
  author    = {Hebel, Christoph and Billion, Bernd and Joh{\"a}nning, Katja},
  title     = {Evaluation von Planungswerkst{\"a}tten in der St{\"a}dteRegion},
  series = {Stadt Region Land. 2011 (2011), H. 88},
  journal   = {Stadt Region Land. 2011 (2011), H. 88},
  publisher = {RWTH},
  address   = {Aachen},
  isbn      = {978-3-88354-162-4},
  pages     = {15 -- 20},
  year      = {2011},
  language  = {de}
}