@article{KoenigUngererBaltesetal.2019,
  author    = {Marc K{\"o}nig and Christina Ungerer and Guido H. Baltes and Orestis Terzidis},
  title     = {Different patterns in the evolution of digital and non-digital ventures' business models},
  journal   = {Technological Forecasting and Social Change - Special issue: Digital Entrepreneurship: Creating and Doing Business in the Digital Era},
  volume    = {Vol. 146},
  pages     = {844 -- 852},
  doi       = {10.1016/j.techfore.2018.05.006},
  year        = {2019},
}