@inproceedings{Bambi:2020g6,
  author = "Bambi, Cosimo",
  title = "{Astrophysical Black Holes: A Review}",
  doi = "10.22323/1.362.0028",
  booktitle = "Proceedings of Multifrequency Behaviour of High Energy Cosmic Sources - XIII {\textemdash} PoS(MULTIF2019)",
  year = 2020,
  volume = "362",
  pages = "028"
}