@misc{Richter1998,
  author    = {Richter, Martin},
  title     = {Saldenbest{\"a}tigungen},
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  language  = {de}
}
@misc{Richter1998,
  author    = {Richter, Martin},
  title     = {Rechnungsh{\"o}fe},
  year      = {1998},
  language  = {de}
}
@misc{Richter1998,
  author    = {Richter, Martin},
  title     = {Langfristige Fertigung},
  year      = {1998},
  language  = {de}
}
@misc{Richter1998,
  author    = {Richter, Martin},
  title     = {Inventur},
  year      = {1998},
  language  = {de}
}
@misc{Richter1998,
  author    = {Richter, Martin},
  title     = {Gesch{\"a}ftsjahr},
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}
@misc{Balderjahn1999,
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@misc{Hummel1999,
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  title     = {M{\"a}rkte, Pl{\"a}tze, Finanzsysteme: L{\"a}nderbericht USA},
  year      = {1999},
  language  = {de}
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@misc{HummelSteden1999,
  author    = {Hummel, Detlev and Steden, Philip},
  title     = {M{\"a}rkte, Pl{\"a}tze, Finanzsysteme: L{\"a}nderbericht Großbritannien},
  year      = {1999},
  language  = {de}
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@misc{Richter1999,
  author    = {Richter, Martin},
  title     = {Interne Revision},
  year      = {1999},
  language  = {de}
}
@misc{Richter1999,
  author    = {Richter, Martin},
  title     = {Jahresabschlußpr{\"u}fung},
  year      = {1999},
  language  = {de}
}
@misc{Richter1999,
  author    = {Richter, Martin},
  title     = {Pr{\"u}fungswesen},
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@misc{Jungmittag1999,
  author    = {Jungmittag, Andre},
  title     = {Senker, J., Biotechnology and competetive advantage : Europe's firms and the US challenge; Cheltenham, Elgar, 1998},
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@misc{Wagner2000,
  author    = {Wagner, Dieter},
  title     = {Etzioni, Amitai},
  isbn      = {3-531-22186-8},
  year      = {2000},
  language  = {de}
}
@misc{EdgarFeltham2000,
  author    = {Edgar, T. and Feltham, G.},
  title     = {Petersen, H.-G., Tax and Transfer Reform in Australia and Germany, Berlin, Berliner Debatte Wissenschaftsverl., 2000},
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@misc{Balderjahn2001,
  author    = {Balderjahn, Ingo},
  title     = {Diller, H. (Hrsg.), Preispolitik, 3. Aufl.; Stuttgart, Kohlhammer, 2000},
  year      = {2001},
  language  = {de}
}
@misc{Balderjahn2001,
  author    = {Balderjahn, Ingo},
  title     = {Nachkaufverhalten},
  isbn      = {3-8006-2689-6},
  year      = {2001},
  language  = {de}
}
@misc{Balderjahn2001,
  author    = {Balderjahn, Ingo},
  title     = {Umweltzeichen},
  isbn      = {3-8006-2689-6},
  year      = {2001},
  language  = {de}
}
@misc{Balderjahn2001,
  author    = {Balderjahn, Ingo},
  title     = {{\"O}kologisches Marketing},
  isbn      = {3-8006-2689-6},
  year      = {2001},
  language  = {de}
}
@misc{Balderjahn2001,
  author    = {Balderjahn, Ingo},
  title     = {{\"O}ko-Controlling},
  isbn      = {3-8006-2689-6},
  year      = {2001},
  language  = {de}
}
@misc{Balderjahn2001,
  author    = {Balderjahn, Ingo},
  title     = {Marktorientiertes Umweltmanagement},
  isbn      = {3-8006-2689-6},
  year      = {2001},
  language  = {de}
}