@article{Arning2009,
  author    = {Arning, Matthias},
  title     = {Mearkenzeichen Greenbuilding},
  series = {Frankfurter Rundschau},
  journal   = {Frankfurter Rundschau},
  year      = {2009},
  language  = {mul}
}
@article{Patzkowsky2009,
  author    = {Patzkowsky, Tobias},
  title     = {Firma Briel baut ihren Verwaltungssitz neu},
  series = {Wittgensteiner Zeitung - Westfalenpost},
  journal   = {Wittgensteiner Zeitung - Westfalenpost},
  number    = {Nr. 56},
  pages     = {teil einer Seite},
  year      = {2009},
  language  = {mul}
}