@article{modelfreetwostepdesignforimproving,
  title = {Two-step reinforcement learning for model-free redesign of nonlinear optimal regulator},
  author = {Mei Minami and Yuka Masumoto and Yoshihiro Okawa and Tomotake Sasaki and Yutaka Hori},
  year = {2021},
  eprint = {2103.03808},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2103.03808v4},
}