@inproceedings{Serpico:2019fB,
  author = "Serpico, P.",
  title = "{Cosmic microwave background as a probe of dark relics}",
  doi = "10.22323/1.347.0094",
  booktitle = "Proceedings of Corfu Summer Institute 2018 "School and Workshops on Elementary Particle Physics and Gravity" {\textemdash} PoS(CORFU2018)",
  year = 2019,
  volume = "347",
  pages = "094"
}