@inproceedings{agradientmethodformultileveloptimization,
  title = {A Gradient Method for Multilevel Optimization},
  author = {Ryo Sato and Mirai Tanaka and Akiko Takeda},
  year = {2021},
  booktitle = {NeurIPS 2021 12},
  eprint = {2105.13954},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2105.13954v2},
}