@article{jang2020design,
  title={Design and fabrication of freeform holographic optical elements},
  author={Jang, Changwon and Mercier, Olivier and Bang, Kiseung and Li, Gang and Zhao, Yang and Lanman, Douglas},
  journal={ACM Transactions on Graphics (TOG)},
  volume={39},
  number={6},
  pages={1--15},
  year={2020},
  publisher={ACM New York, NY, USA}
}