@article{BacksPohlmann2017,
  author    = {Peter Backs and Norbert Pohlmann},
  title     = {Voice over IP aber sicher},
  journal   = {IT-Sicherheit - Management und Praxis},
  number    = {5},
  pages     = {18 -- 19},
  url       = {https://norbert-pohlmann.com/app/uploads/2015/08/208-Voice-over-IP-aber-sicher-Prof-Norbert-Pohlmann.pdf},
  year      = {2017},
}