@article{Walter2020,
  author    = {Johann Walter},
  title     = {Das Kreislaufmodell - neu interpretiert},
  journal   = {WiSt - Wirtschaftswissenschaftliches Studium},
  volume    = {48},
  number    = {12},
  pages     = {50 -- 54},
  doi       = {10.15358/0340-1650-2019-12-50},
  year      = {2020},
}