@article{fastdensityestimationfordensitybased,
  title = {Fast Density Estimation for Density-based Clustering Methods},
  author = {Difei Cheng and Ruihang Xu and Bo Zhang and Ruinan Jin},
  year = {2021},
  eprint = {2109.11383},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2109.11383v3},
}