@book{vonKeitzHeyd2007,
  author    = {von Keitz, Isabel and Heyd, Reinhard},
  title     = {IFRS-Management},
  address   = {M{\"u}nchen},
  year      = {2007},
  language  = {mul}
}
@incollection{vonKeitzHeyd2008,
  author    = {von Keitz, Isabel and Heyd, Reinhard},
  title     = {IFRS 5},
  series = {Internationales Bilanzrecht - Rechnungslegung nach IFRS, hrsg. von Thiele/ von Keitz/ Br{\"u}cks},
  booktitle = {Internationales Bilanzrecht - Rechnungslegung nach IFRS, hrsg. von Thiele/ von Keitz/ Br{\"u}cks},
  address   = {Bonn},
  year      = {2008},
  language  = {mul}
}
@incollection{vonKeitzHeyd2008,
  author    = {von Keitz, Isabel and Heyd, Reinhard},
  title     = {IFRS 5},
  series = {Internationales Bilanzrecht - Rechnungslegung nach IFRS, hrsg. von Thiele/ von Keitz/ Br{\"u}cks},
  booktitle = {Internationales Bilanzrecht - Rechnungslegung nach IFRS, hrsg. von Thiele/ von Keitz/ Br{\"u}cks},
  address   = {Bonn},
  year      = {2008},
  language  = {mul}
}
@incollection{vonKeitzHeyd2008,
  author    = {von Keitz, Isabel and Heyd, Reinhard},
  title     = {IFRS 5},
  series = {Internationales Bilanzrecht- Rechnunglsegung nach IFRS, hrsg. von Thiele/von Keitz/Br{\"u}cks},
  booktitle = {Internationales Bilanzrecht- Rechnunglsegung nach IFRS, hrsg. von Thiele/von Keitz/Br{\"u}cks},
  address   = {Bonn},
  year      = {2008},
  language  = {mul}
}
@book{Westerheide1987,
  author    = {Westerheide, Peter},
  title     = {Ranglistenberechnung per Computer},
  address   = {Hamburg},
  year      = {1987},
  language  = {mul}
}
@techreport{ZdebelWesterheijdenNickel2009,
  author    = {Zdebel, Thorsten and Westerheijden, Don and Nickel, Sigrun},
  title     = {Joint degrees in de Europese ruimte voor hoger onderwijs. Kansen en belemmeringen voor transnationale samenwerking in het hoger onderwijs met als voorbeeld de EUREGIO Duitsland-Nederland},
  year      = {2009},
  language  = {mul}
}
@incollection{ZellnerLaumannAppelfeller2015,
  author    = {Zellner, Philipp and Laumann, Marcus and Appelfeller, Wieland},
  title     = {Towards Managing Business Process Variants within Organizations - An Action Research Study},
  series = {Tung X. Bui, Ralph H. Sprague Jr.: Proceedings of the 48th Hawaii International Conference on System Sciences (HICSS)},
  booktitle = {Tung X. Bui, Ralph H. Sprague Jr.: Proceedings of the 48th Hawaii International Conference on System Sciences (HICSS)},
  publisher = {dblp},
  address   = {Hawaii},
  isbn      = {978-1-4799-7367-5},
  doi       = {10.1109/HICSS.2015.495},
  pages     = {4130 -- 4139},
  year      = {2015},
  language  = {mul}
}
@incollection{ZuelchErdmannGebhardt2007,
  author    = {Z{\"u}lch, H. and Erdmann, M-K and Gebhardt, R.},
  title     = {Goodwill (Erwerbsmethode, Impairmenttest)},
  series = {Freidank, C.-Ch.; Peem{\"o}ller, V. H. (Hrsg.): Corporate Governance und Interne Revision - Handbuch f{\"u}r die Neuausrichtung des Internal Auditings},
  booktitle = {Freidank, C.-Ch.; Peem{\"o}ller, V. H. (Hrsg.): Corporate Governance und Interne Revision - Handbuch f{\"u}r die Neuausrichtung des Internal Auditings},
  address   = {Berlin},
  pages     = {386 -- 406},
  year      = {2007},
  language  = {mul}
}