Heidig, WibkeWibkeHeidigWentzel, DanielDanielWentzelTomczak, TorstenTorstenTomczak2023-04-132023-04-132013-07-01https://www.alexandria.unisg.ch/handle/20.500.14171/89012deUpselling or Upsetting? Determinants of a Successful Upsell Optionconference paper