@incollection{Hauck2019,
  author    = {Werner Hauck},
  title     = {Die Amtssprache der Schweiz. Anspruch und Wirklichkeit},
  series = {Deutsch als Verkehrssprache in Europa},
  publisher = {de Gruyter},
  address   = {Berlin [u.a.]},
  doi       = {10.1515/9783110622478-013},
  url       = {https://nbn-resolving.org/urn:nbn:de:bsz:mh39-87234},
  pages     = {147 -- 163},
  year      = {2019},
  language  = {de}
}