@article{levelsetsorgradientlinesaunifyingview,
  title = {Moving Up the Cluster Tree with the Gradient Flow},
  author = {Ery Arias-Castro and Wanli Qiao},
  year = {2021},
  eprint = {2109.08362},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2109.08362v2},
}