@misc{feng2018enhanced,
  title={Enhanced global signal of neutral hydrogen due to excess radiation at cosmic dawn},
  author={Chang Feng and Gilbert Holder},
  year={2018},
  eprint={1802.07432},
  archivePrefix={arXiv},
  primaryClass={astro-ph.CO},
  doi={10.3847/2041-8213/aac0fe},
  url={https://arxiv.org/abs/1802.07432}
}