@incollection{K{\"o}hler2009,
  author    = {K{\"o}hler, Dennis},
  title     = {Artificially enlightened urban spaces at night},
  series = {Quality of life and working life in comparison},
  publisher = {Peter Lang},
  address   = {Frankfurt am Main},
  pages     = {16},
  year      = {2009},
  language  = {en}
}