@article{efficientnaturalgradientdescentmethods,
  title = {Efficient Natural Gradient Descent Methods for Large-Scale PDE-Based Optimization Problems},
  author = {Levon Nurbekyan and Wanzhou Lei and Yunan Yang},
  year = {2022},
  eprint = {2202.06236},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2202.06236v3},
}