@article{Gao:2017Ih,
  author = "Gao, Bo  and  Chen, Mingjun  and  Yao, Zhiguo  and  Liu, Jinyan",
  title = "{The time calibration system for the LHAASO-WCDA experiment}",
  doi = "10.22323/1.301.0829",
  journal = "PoS",
  year = 2017,
  volume = "ICRC2017",
  pages = "829"
}