@article{timetransformedtestfortheexplosive,
  title = {Time-Transformed Test for the Explosive Bubbles under Non-stationary Volatility},
  author = {Eiji Kurozumi and Anton Skrobotov and Alexey Tsarev},
  year = {2020},
  eprint = {2012.13937},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2012.13937v2},
}