@incollection{K{\"o}hler2010,
  author    = {K{\"o}hler, Dennis},
  title     = {Integration of artificial light in urban spaces as a matter of urban planning},
  series = {Proceedings of CIE 2010 "Lighting qualitiy and energy efficiency"},
  pages     = {5},
  year      = {2010},
  language  = {en}
}
@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}
}
@incollection{K{\"o}hler2007,
  author    = {K{\"o}hler, Dennis},
  title     = {Character of urban spaces during night-time},
  series = {Convention proceedings : a milestone ; PLDC 1st global lighthing design conference, 24.-27. October, 2007 in London/UK},
  publisher = {VIA-Verlag},
  address   = {G{\"u}tersloh},
  pages     = {3},
  year      = {2007},
  language  = {en}
}
@incollection{WalzK{\"o}hler2006,
  author    = {Walz, Manfred and K{\"o}hler, Dennis},
  title     = {Perceiving, orientating and moving in urban spaces during night-time},
  series = {Motion, e-motion, urban space : 7. EAES conference in Dortmund},
  publisher = {Fachhochschule Dortmund},
  address   = {Dortmund},
  pages     = {13},
  year      = {2006},
  language  = {en}
}
@incollection{K{\"o}hlerWalz2004,
  author    = {K{\"o}hler, Dennis and Walz, Manfred},
  title     = {Gesamtlichtplanung und k{\"u}nstlerische Lichtgestaltungen im {\"o}ffentlichen Raum mit Bestandsaufnahme der Lichtgestaltungen in NRW},
  series = {Am Rande des Lichts in Mitten des Lichts : Lichtkunst und Lichtprojekte im {\"o}ffentlichen Raum Nordrhein-Westfalens : ein Lichtatlas},
  publisher = {Wienand},
  address   = {K{\"o}ln},
  year      = {2004},
  language  = {de}
}
@article{K{\"o}hler2008,
  author    = {K{\"o}hler, Dennis},
  title     = {Artificial light in urban space},
  series = {Architecture and modern information technologies : international electronic schientific educational journal on scientific technological and educational.methodical aspects of mordern architectural education and designing with the usage of video and computer technologies},
  year      = {2008},
  language  = {en}
}