@incollection{ThalenhorstBalz2003,
  author    = {Thalenhorst, Jobst and Balz, Ulrich},
  title     = {Shareholder-Value},
  series = {Vollmuth, H., Pepels, W.: Kosten senken und Leistungen steigern durch marktorientiertes Kostenmanagement},
  booktitle = {Vollmuth, H., Pepels, W.: Kosten senken und Leistungen steigern durch marktorientiertes Kostenmanagement},
  address   = {Renningen},
  year      = {2003},
  language  = {mul}
}
@article{vonKeitz2003,
  author    = {von Keitz, Isabel},
  title     = {Freiwillige externe Berichterstattung {\"u}ber immaterielle Werte},
  series = {DB 2003},
  journal   = {DB 2003},
  pages     = {1233 -- 1237},
  year      = {2003},
  language  = {mul}
}