@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}
}
@incollection{ZellnerLaumannAppelfeller2015,
  author    = {Zellner, Philipp and Laumann, Marcus and Appelfeller, Wieland},
  title     = {Towards Managing Business Process Variants within Organizations - An Action Research Study},
  series = {Tung X. Bui, Ralph H. Sprague Jr.: Proceedings of the 48th Hawaii International Conference on System Sciences (HICSS)},
  booktitle = {Tung X. Bui, Ralph H. Sprague Jr.: Proceedings of the 48th Hawaii International Conference on System Sciences (HICSS)},
  publisher = {dblp},
  address   = {Hawaii},
  isbn      = {978-1-4799-7367-5},
  doi       = {10.1109/HICSS.2015.495},
  pages     = {4130 -- 4139},
  year      = {2015},
  language  = {mul}
}