Searching for an additional high-energy component in Fermi-LAT GRB afterglowsXin-Bo He, Pak-Hin Thomas Tam, Guang-Bo Long, Partha Sarathi Pal, Yong Zhang and Li-Jun ZhangA&A, 657 (2022) A111DOI: https://doi.org/10.1051/0004-6361/202040039
