Determining lump solutions for a combined soliton equation in (2+1)-dimensions Jin-Yun Yang, Wen-Xiu Ma and Chaudry Masood Khalique Eur. Phys. J. Plus, 135 6 (2020) 494 Published online: 13 June 2020 DOI: 10.1140/epjp/s13360-020-00463-z