@misc{Richter2003,
  author    = {Richter, Martin},
  title     = {Accrual Prinzip},
  isbn      = {3-7890-6319-3},
  year      = {2003},
  language  = {de}
}
@misc{Richter1991,
  author    = {Richter, Martin},
  title     = {Anhang, Pr{\"u}fung der Pflichtangaben zum Einzelabschluß},
  isbn      = {3-7910-8036-9},
  year      = {1991},
  language  = {de}
}
@misc{Richter1994,
  author    = {Richter, Martin},
  title     = {Anlagespiegel},
  year      = {1994},
  language  = {de}
}
@misc{Bethan2011,
  author    = {Bethan, Marcel},
  title     = {Aron, R., Frieden und Krieg, eine Theorie der Staatenwelt; Frankfurt am Main, Fischer, 1963},
  isbn      = {978-3-941880-21-4},
  year      = {2011},
  language  = {de}
}
@misc{Richter1991,
  author    = {Richter, Martin},
  title     = {Audit Committees},
  isbn      = {3-7910-8036-9},
  year      = {1991},
  language  = {de}
}
@misc{Richter2003,
  author    = {Richter, Martin},
  title     = {Außenpr{\"u}fung},
  isbn      = {3-7890-6319-3},
  year      = {2003},
  language  = {de}
}
@misc{Richter2003,
  author    = {Richter, Martin},
  title     = {Bestandsrechnung},
  isbn      = {3-7890-6319-3},
  year      = {2003},
  language  = {de}
}
@misc{Richter2003,
  author    = {Richter, Martin},
  title     = {Bet{\"a}tigungspr{\"u}fung},
  isbn      = {3-7890-6319-3},
  year      = {2003},
  language  = {de}
}
@misc{Kleger2011,
  author    = {Kleger, Heinz},
  title     = {Burke, E., Betrachtungen {\"u}ber die Franz{\"o}sische Revolution, Z{\"u}rich, Manesse Bibliothek der Weltgeschichte, 1987},
  isbn      = {978-3-941880-21-4},
  year      = {2011},
  language  = {de}
}
@misc{Balderjahn2001,
  author    = {Balderjahn, Ingo},
  title     = {Diller, H. (Hrsg.), Preispolitik, 3. Aufl.; Stuttgart, Kohlhammer, 2000},
  year      = {2001},
  language  = {de}
}