@article{O'Brien:2021WA,
  author = "O'Brien, Stephan",
  title = "{Calibration of Aerogel Tiles for the HELIX-RICH Detector}",
  doi = "10.22323/1.395.0090",
  journal = "PoS",
  year = 2021,
  volume = "ICRC2021",
  pages = "090"
}