@techreport{itb3270,
  author = {Ziehm, K.},
  title = {Fahrradverleihsysteme als Element von Fahrradstädten},
  year = {2012},
  series = {artec-papers},
  number = {182},
  publisher = {Universität Bremen},
  address = {Bremen},
  doi = {10.26092/elib/667},
  language = {de},
}