@article{RuppMerkel2021,
  author    = {Mario Rupp and Markus Merkel},
  title     = {Direct digital manufacturing – the role of cost accounting for online hubs to access industry 4.0},
  series   = {Industry 4.0 : international scientific journal},
  volume    = {6},
  number    = {3},
  issn      = {2534-8582},
  pages     = {102 -- 105},
  year      = {2021},
  language  = {en}
}