@article{Fujii:2016d4,
  author = "Fujii, Toshihiro",
  title = "{Search for Ultra-relativistic Magnetic Monopoles with the Pierre Auger Observatory }",
  doi = "10.22323/1.236.0319",
  journal = "PoS",
  year = 2016,
  volume = "ICRC2015",
  pages = "319"
}