@article{universalityandapproximationboundsfor,
  title = {Universality and approximation bounds for echo state networks with random weights},
  author = {Zhen Li and Yunfei Yang},
  year = {2022},
  eprint = {2206.05669},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2206.05669v3},
}