@incollection{Pooten1994,
  author    = {Pooten, Holger},
  title     = {Deutsche Rechnungslegung},
  series = {Gr{\"a}fer, Horst / Demming, Claudia: Deutsche Rechnungslegung},
  booktitle = {Gr{\"a}fer, Horst / Demming, Claudia: Deutsche Rechnungslegung},
  publisher = {Sch{\"a}ffer-Poeschel},
  address   = {Stuttgart},
  pages     = {307 -- 370},
  year      = {1994},
  language  = {mul}
}
@incollection{Pooten2008,
  author    = {Pooten, Holger},
  title     = {Bilanzanalyse},
  series = {Pooten, Holger u.a.: BWL kompakt},
  booktitle = {Pooten, Holger u.a.: BWL kompakt},
  edition   = {4. Aufl.},
  publisher = {Euroforum Verlag},
  address   = {D{\"u}sseldorf},
  pages     = {Lektion 3},
  year      = {2008},
  language  = {mul}
}