@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}
}
@book{Frohn2006,
  author    = {Frohn, Jan},
  title     = {Mehrwertleistungen in der Kontraktlogistik},
  publisher = {Shaker},
  address   = {Aachen},
  isbn      = {978-3-8322-5379-0},
  pages     = {255 S. : Ill.},
  year      = {2006},
  language  = {de}
}