1. Pierre Auger, A. Aab et al., Phys. Rev. D 102(6), 062005 (2020). arXiv:2008.06486
2. Telescope Array, Pierre Auger, R. Abbasi et al., PoS ICRC2021, 337 (2021)
3. Telescope Array, D. Ivanov, D. Bergman, G. Furlich, R. Gonzalez, G. Thomson, Y. Tsunesada, PoS ICRC2021, 341 (2021)
4. LHAASO, Z. Cao et al., Science 373(6553), 425–430 (2021). arXiv:2111.06545
5. LHAASO, F. Aharonian et al., Phys. Rev. Lett. 126(24), 241103 (2021). arXiv:2106.09396