@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" }