@article{fromthegreenewuconvolutiontogradient,
  title = {From the Greene--Wu Convolution to Gradient Estimation over Riemannian Manifolds},
  author = {Tianyu Wang and Yifeng Huang and Didong Li},
  year = {2021},
  eprint = {2108.07406},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2108.07406v4},
}