@article{BuchholzKaufmann1998,
  author    = {Buchholz, Wolfgang and Kaufmann, Lutz},
  title     = {Spinning-off Procurement - Establishing an independent procurement company},
  series = {"PRACTIX- Best Practices in Purchasing \& Supply Chain Management" Vol. 2, Issue 2},
  journal   = {"PRACTIX- Best Practices in Purchasing \& Supply Chain Management" Vol. 2, Issue 2},
  number    = {December},
  pages     = {9 -- 12},
  year      = {1998},
  language  = {mul}
}
@article{BuchholzWerner2001,
  author    = {Buchholz, Wolfgang and Werner, Hartmut},
  title     = {Supply Chain Solutions - Best Practices in e-Business},
  series = {Handelsblattreihe "Netzwert"},
  journal   = {Handelsblattreihe "Netzwert"},
  year      = {2001},
  language  = {mul}
}
@article{BuchholzAppelfellerSchulteindenBaeumen2006,
  author    = {Buchholz, Wolfgang and Appelfeller, Wieland and Schulte in den B{\"a}umen, Marcus},
  title     = {Prozesse optimieren},
  series = {Beschaffung aktuell (BA)},
  journal   = {Beschaffung aktuell (BA)},
  number    = {12},
  year      = {2006},
  language  = {mul}
}
@article{BuchholzAppelfellerSchulteindenBaeumen2006,
  author    = {Buchholz, Wolfgang and Appelfeller, Wieland and Schulte in den B{\"a}umen, Marcus},
  title     = {Materialgruppenstrategie},
  series = {Beschaffung aktuell},
  journal   = {Beschaffung aktuell},
  number    = {11},
  year      = {2006},
  language  = {mul}
}
@article{BuchholzStepniak2008,
  author    = {Buchholz, Wolfgang and Stepniak, Sherin},
  title     = {Procurement Service Providing: Konzeption - Branchenstudie - Praxisbeispiel},
  series = {Supply Chain Management},
  journal   = {Supply Chain Management},
  number    = {2},
  pages     = {7 -- 14},
  year      = {2008},
  language  = {mul}
}
@article{BuchholzTheesfeld2013,
  author    = {Buchholz, Wolfgang and Theesfeld, Gerrit},
  title     = {Local-for-Local-Sourcing},
  series = {Beschaffung aktuell},
  journal   = {Beschaffung aktuell},
  number    = {1-2},
  pages     = {18 -- 20},
  year      = {2013},
  language  = {mul}
}