@article{xie2020pointcontrast,
  title={PointContrast: Unsupervised pre-training for 3d point cloud understanding},
  author={Saining Xie, Jiatao Gu, Demi Guo, Charles R Qi, Leonidas Guibas, Or Litany},
  journal={arXiv preprint arXiv:2007.10985},
  url={https://arxiv.org/abs/2007.10985},
  year={2020}
}