@article{Zhang:20211/,
  author = "Zhang, Ze-Lin  and  Liu, Ruo-Yu  and  Wang, Xiang-Yu",
  title = "{Acceleration of ultrahigh-energy cosmic rays in the early afterglows of gamma-ray bursts}",
  doi = "10.22323/1.395.0423",
  journal = "PoS",
  year = 2021,
  volume = "ICRC2021",
  pages = "423"
}