The Klein–Gordon equation with a generalized Morse potential in D-dimensions Aram Bahroz Brzo, Eser Olğar and Hemn G. Hussein Eur. Phys. J. Plus, 136 10 (2021) 1007 Published online: 07 October 2021 DOI: 10.1140/epjp/s13360-021-01752-x