@article{Contopoulos:2019qk,
  author = "Contopoulos, Ioannis",
  title = "{A Cosmic Battery in accretion flows around astrophysical black holes}",
  doi = "10.22323/1.329.0012",
  journal = "PoS",
  year = 2019,
  volume = "BHCB2018",
  pages = "012"
}