@article{directionalconvergenceanalysisunder,
  title = {Directional Convergence Analysis under Spherically Symmetric Distribution},
  author = {Dachao Lin and Zhihua Zhang},
  year = {2021},
  eprint = {2105.03879},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2105.03879v1},
}