@article{Toennissen2013,
  author    = {T{\"o}nnissen, Stefan},
  title     = {Die Aktivierung von selbst erstellten immateriellen Verm{\"o}gensgegenst{\"a}nden des Anlageverm{\"o}gens},
  series = {Controller Magazin},
  volume    = {38/2013},
  journal   = {Controller Magazin},
  issn      = {0939-0359},
  pages     = {25 -- 29},
  year      = {2013},
  language  = {de}
}
@article{Toennissen2013,
  author    = {T{\"o}nnissen, Stefan},
  title     = {Cloud Computing unter CoBiT},
  series = {Zeitschrift f{\"u}r Interne Revision (ZIR)},
  journal   = {Zeitschrift f{\"u}r Interne Revision (ZIR)},
  issn      = {1868-7814},
  pages     = {35 -- 39},
  year      = {2013},
  language  = {de}
}