Holographic Einstein rings of a Gauss–Bonnet AdS black holeXiao-Xiong Zeng, Ke-Jian He, Jin Pu, Guo-Ping Li and Qing-Quan JiangEur. Phys. J. C, 83 10 (2023) 897DOI: https://doi.org/10.1140/epjc/s10052-023-12079-5