@inproceedings{jiao2019automatic,
  author={Jiao, Jianhao and Yu, Yang and Liao, Qinghai and Ye, Haoyang and Liu, Ming},
  title={Automatic Calibration of Multiple 3D LiDARs in Outdoor Environment},
  booktitle={2019 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)},
  year={2019}
}