@inproceedings{Winkler:2025GF,
  author = "Winkler, Hartmut",
  title = "{The I Zw 1 type AGN: busy in X-rays but optically quiet}",
  doi = "10.22323/1.514.0001",
  booktitle = "Proceedings of High Energy Astrophysics in Southern Africa 2025 {\textemdash} PoS(HEASA2025)",
  year = 2025,
  volume = "514",
  pages = "001"
}