@misc{Kay2022,
  author    = {Alex James Kay},
  title     = {Filbert, Alfred},
  booktitle = {Deutsche Biographie},
  url       = {https://www.deutsche-biographie.de/12517926X.html\#dbocontent},
  institution = {Historisches Institut},
  type      = {other},
  year        = {2022},
}