@article{Halzen:2019Bo,
  author = "Halzen, Francis",
  title = "{Cosmic Neutrinos and the Cosmic-Ray Accelerator TXS 0506+056}",
  doi = "10.22323/1.358.0021",
  journal = "PoS",
  year = 2019,
  volume = "ICRC2019",
  pages = "021"
}