@misc{Drexler2011,
  author    = {Drexler, Hans},
  title     = {Sustainable by Design},
  year      = {2011},
  language  = {mul}
}
@misc{DrexlerElKhouli2011,
  author    = {Drexler, Hans and El Khouli, Sebastian},
  title     = {Nachhaltig Entwerfen. Ganzheitliche Wohnkonzepte. Grundlagen, Strategien, Konzepte},
  year      = {2011},
  language  = {mul}
}
@misc{DrexlerVesterborg2011,
  author    = {Drexler, Hans and Vesterborg, Inge},
  title     = {Aarhus Minihaus},
  year      = {2011},
  language  = {mul}
}