@incollection{SchmitzWeber2007,
  author    = {Schmitz, Philipp and Weber, Martin},
  title     = {Setze nicht alles auf eine Karte, diversifiziere!},
  series = {Genial einfach investieren},
  booktitle = {Genial einfach investieren},
  publisher = {Campus-Verlag},
  address   = {Frankfurt a.M.},
  pages     = {104 -- 140},
  year      = {2007},
  language  = {de}
}
@incollection{StraubeFrohn2007,
  author    = {Straube, and Frohn, Jan},
  title     = {Kundennutzen durch logistische Mehrwertleistungen},
  series = {Handbuch der Kontraktlogistik},
  booktitle = {Handbuch der Kontraktlogistik},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  isbn      = {9783527502035},
  pages     = {181 -- 198},
  year      = {2007},
  language  = {de}
}