Investigating strong gravitational lensing effects by supermassive black holes with Horndeski gravity Jitendra Kumar, Shafqat Ul Islam and Sushant G. Ghosh Eur. Phys. J. C, 82 5 (2022) 443 Published online: 14 May 2022 DOI: 10.1140/epjc/s10052-022-10357-2