@incollection{ButenwegGellert2009,
  author    = {Butenweg, Christoph and Gellert, Christoph},
  title     = {Erdbebenberechnung von Mauerwerksbauten nach DIN EN 1998-1 (12.2010)},
  series = {Mauerwerksbau-Praxis / Schubert; Schneider; Schoch (Hrsg.)},
  booktitle = {Mauerwerksbau-Praxis / Schubert; Schneider; Schoch (Hrsg.)},
  publisher = {Bauwerk},
  address   = {Berlin},
  isbn      = {978-3-89932-217-0},
  pages     = {299 -- 343},
  year      = {2009},
  language  = {de}
}
@incollection{BorchertHintze2009,
  author    = {Borchert, J{\"o}rg and Hintze, D.},
  title     = {Der Aufbau von Handelseinheiten},
  series = {Energiehandel in Europa},
  booktitle = {Energiehandel in Europa},
  editor    = {Zenke, Ines},
  edition   = {2. Aufl.},
  publisher = {Beck},
  address   = {M{\"u}nchen},
  isbn      = {978-3-406-58373-5},
  pages     = {393 -- 410},
  year      = {2009},
  language  = {de}
}
@incollection{BoonzaaijerHelmig2009,
  author    = {Boonzaaijer, Karel and Helmig, Ilka},
  title     = {2D Room : cardboard installation},
  series = {Papercraft [1] : design and art with paper},
  booktitle = {Papercraft [1] : design and art with paper},
  publisher = {Gestalten Verlag},
  address   = {Berlin},
  isbn      = {978-3-89955-251-5},
  pages     = {206},
  year      = {2009},
  subject      = {Papierkunst},
  language  = {en}
}
@incollection{Biener2009,
  author    = {Biener, Ernst},
  title     = {Abfallwirtschaft},
  series = {Wendehorst Beispiele aus der Baupraxis. - 3. Aufl.},
  booktitle = {Wendehorst Beispiele aus der Baupraxis. - 3. Aufl.},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-8348-0684-0 ; 978-3-8348-9997-2},
  doi       = {10.1007/978-3-8348-9997-2_16},
  pages     = {463 -- 499},
  year      = {2009},
  language  = {de}
}