@article{Hirschberg2004,
  author    = {Hirschberg, Rainer},
  title     = {{\"O}ffentliche Geb{\"a}ude in der Vorreiterrolle. Studie fordert Anreiz zur Energieeffizienz},
  series = {Industriebau. 50 (2004), H. 2},
  journal   = {Industriebau. 50 (2004), H. 2},
  isbn      = {0935-2023},
  pages     = {46 -- 47},
  year      = {2004},
  language  = {de}
}
@article{Hirschberg2004,
  author    = {Hirschberg, Rainer},
  title     = {Energieeffizienz bei {\"o}ffentlichen Geb{\"a}uden},
  series = {Baumeister. 101 (2004), H. 2},
  journal   = {Baumeister. 101 (2004), H. 2},
  isbn      = {0005-674X},
  pages     = {36 -- 37},
  year      = {2004},
  language  = {de}
}
@article{Naujokat2004,
  author    = {Naujokat, Anke},
  title     = {Bottrop: Umbau im Museum Quadrat},
  series = {Bauwelt. 95 (2004), H. 35},
  journal   = {Bauwelt. 95 (2004), H. 35},
  isbn      = {0931-6590},
  pages     = {4},
  year      = {2004},
  language  = {de}
}
@article{Wilke2004,
  author    = {Wilke, Thomas},
  title     = {Vergessene Planungen - Die Kapelle im Neuen Schloß in Stuttgart},
  series = {Zeitschrift f{\"u}r w{\"u}rttembergische Landesgeschichte (ZWLG)},
  volume    = {63},
  journal   = {Zeitschrift f{\"u}r w{\"u}rttembergische Landesgeschichte (ZWLG)},
  issn      = {0044-3786},
  pages     = {169 -- 201},
  year      = {2004},
  language  = {de}
}