@incollection{Peren2018,
  author    = {Franz W. Peren},
  title     = {Das Peren-Theorem},
  series = {Gadatsch, Ihne et al. (Hg.): Nachhaltiges Wirtschaften im digitalen Zeitalter: Innovation - Steuerung - Compliance},
  publisher = {Springer Gabler},
  address   = {Wiesbaden},
  isbn      = {978-3-658-20173-9},
  doi       = {10.1007/978-3-658-20174-6\_29},
  pages     = {419 -- 424},
  year      = {2018},
  language  = {de}
}