@article{amachinelearningbasedregulatoryrisk,
  title = {A Machine Learning Based Regulatory Risk Index for Cryptocurrencies},
  author = {Xinwen Ni and Wolfgang Karl Härdle and Taojun Xie},
  year = {2020},
  eprint = {2009.12121},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2009.12121v3},
}