@inproceedings{Halzen:2019Bo, author = "Halzen, Francis", title = "{Cosmic Neutrinos and the Cosmic-Ray Accelerator TXS 0506+056}", doi = "10.22323/1.358.0021", booktitle = "Proceedings of 36th International Cosmic Ray Conference {\textemdash} PoS(ICRC2019)", year = 2019, volume = "358", pages = "021" }