@article{Ruehl:2019ZL,
  author = "Ruehl, Philip",
  title = "{Searches for ultra-high-energy photons at the Pierre Auger Observatory}",
  doi = "10.22323/1.357.0068",
  journal = "PoS",
  year = 2019,
  volume = "Asterics2019",
  pages = "068"
}