@book{HufnagelHoldt2002,
  author    = {Hufnagel, W. and Holdt, W.},
  title     = {Betriebliches Rechnungswesen, Externes Rechnungswesen LE 1-4},
  address   = {Hagen},
  year      = {2002},
  language  = {mul}
}