@book{Gustrau2023,
  author    = {Gustrau, Frank},
  title     = {Electromagnetic Design},
  publisher = {Hanser},
  address   = {M{\"u}nchen},
  isbn      = {978-3-446-47418-5},
  pages     = {330},
  year      = {2023},
  language  = {de}
}
@book{Hartmann2023,
  author    = {Hartmann, Anja},
  title     = {Zusammenleben in Gemeinschaft und Gesellschaft},
  publisher = {Verlag W. Kohlhammer},
  address   = {Stuttgart},
  isbn      = {978-3-17-038500-9},
  pages     = {202},
  year      = {2023},
  language  = {de}
}