@article{Bach:20194Y,
  author = "Bach, Uwe  and  Boccardi, Biagina  and  Krichbaum, Thomas  and  Lobanov, Andrei",
  title = "{Does Cygnus A harbor a binary super-massive black hole?}",
  doi = "10.22323/1.344.0007",
  journal = "PoS",
  year = 2019,
  volume = "EVN2018",
  pages = "007"
}