@article{RdigerRitter2021Die,
  author       = {Rüdiger Ritter},
  title        = {Die Nationaloper im östlichen Europa},
  howpublished = {\url{https://www.copernico.eu/de/link/613498f189ec88.99963309}},
  publisher    = {Herder-Institut für historische Ostmitteleuropaforschung - Institut der Leibniz-Gemeinschaft},
  note         = {Online available; accessed at 17/11/2025},
  language     = {de},
  year         = {2021},
  month        = {sep},
}