@misc{h2018double,
  title={Double Soft Graviton Theorems and BMS Symmetries},
  author={Anupam A. H and Arpan Kundu and Krishnendu Ray},
  year={2018},
  eprint={1803.03023},
  archivePrefix={arXiv},
  primaryClass={hep-th},
  url={https://arxiv.org/abs/1803.03023}
}