@inproceedings{Okumura:2016UL,
  author = "Okumura, Akira  and  Noda, Koji  and  Rulten, Cameron",
  title = "{ROBAST: Development of a Non-sequential Ray-tracing Simulation Library and its Applications in the Cherenkov Telescope Array }",
  doi = "10.22323/1.236.0951",
  booktitle = "Proceedings of The 34th International Cosmic Ray Conference {\textemdash} PoS(ICRC2015)",
  year = 2016,
  volume = "236",
  pages = "951"
}