@misc{zhang2019symmetrical,
  title={Symmetrical Reality: Toward a Unified Framework for Physical and Virtual Reality},
  author={Zhenliang Zhang and Cong Wang and Dongdong Weng and Yue Liu and Yongtian Wang},
  year={2019},
  eprint={1903.02723},
  archivePrefix={arXiv},
  primaryClass={cs.HC},
  url={https://arxiv.org/abs/1903.02723}
}