@article{unsupervisedlearningon3dpointcloudsby,
  title = {Unsupervised Learning on 3D Point Clouds by Clustering and Contrasting},
  author = {Guofeng Mei and Litao Yu and Qiang Wu and Jian Zhang and Mohammed Bennamoun},
  year = {2022},
  eprint = {2202.02543},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2202.02543v2},
}