@book{MayerOesterwinter2018,
  author    = {Mayer, Volker and Oesterwinter, Petra},
  title     = {Die BGB-Klausur - eine Schreibwerkstatt},
  publisher = {Nomos},
  address   = {Baden-Baden},
  isbn      = {978-3-8487-4333-9},
  pages     = {242},
  year      = {2018},
  language  = {de}
}
@book{MayerOesterwinter2017,
  author    = {Mayer, Volker and Oesterwinter, Petra},
  title     = {Die BGB-Klausur},
  publisher = {Nomos},
  address   = {Baden-Baden},
  isbn      = {978-3-8252-4608-2},
  pages     = {270},
  year      = {2017},
  language  = {de}
}