Integrability and lump solutions to an extended (2+1)-dimensional KdV equation Li Cheng, Wen Xiu Ma, Yi Zhang and Jian Ya Ge Eur. Phys. J. Plus, 137 8 (2022) 902 Published online: 08 August 2022 DOI: 10.1140/epjp/s13360-022-03076-w