@inproceedings{Hattori:2016ZD,
  author = "Hattori, Hironori  and  Kobayashi, Tatsuo  and  Omoto, Naoya  and  Seto, Osamu",
  title = "{Dilution of axion dark radiation}",
  doi = "10.22323/1.234.0399",
  booktitle = "Proceedings of The European Physical Society Conference on High Energy Physics {\textemdash} PoS(EPS-HEP2015)",
  year = 2016,
  volume = "234",
  pages = "399"
}