@inproceedings{BuchholzKappelSchiele2019,
  author    = {Wolfgang Buchholz and Antonia Kappel and Holger Schiele},
  title     = {Supplier relationships with competing customers - How can purchasers find out who is the preferred customer?},
  booktitle = {IPSERA Conference proceedings},
  pages     = {1 -- 23},
  year      = {2019},
}