@article{Walter2021,
  author    = {Johann Walter},
  title     = {Konkurrenz und Kooperation in der {\"o}konomischen Theorie},
  journal   = {Wirtschaftswissenschaftliches Studium (WiSt). Zeitschrift f{\"u}r Studium und Forschung},
  volume    = {50},
  number    = {9},
  pages     = {44 -- 47},
  year      = {2021},
}