@article{pc2pupatchcorrelationandposition,
  title = {PC$^2$-PU: Patch Correlation and Point Correlation for Effective Point Cloud Upsampling},
  author = {Chen Long and Wenxiao Zhang and Ruihui Li and Hao Wang and Zhen Dong and Bisheng Yang},
  year = {2021},
  eprint = {2109.09337},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2109.09337v3},
}