9Yi-Qing Guo1,2,Qiang Yuan1,3 1. Key Laboratory of Dark Matter and Space Astronomy,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210008,China,2. Key Laboratory of Particle Astrophysics,Institute of High Energy Physics.On the knee of Galactic cosmic rays in light of sub-TeV spectral hardenings[J].Chinese Physics C,2018,42(7):113-122.
