@inproceedings{O'Brien:2021WA, author = "O'Brien, Stephan", title = "{Calibration of Aerogel Tiles for the HELIX-RICH Detector}", doi = "10.22323/1.395.0090", booktitle = "Proceedings of 37th International Cosmic Ray Conference {\textemdash} PoS(ICRC2021)", year = 2021, volume = "395", pages = "090" }