Iterative treatment of the Coulomb potential in laser–atom interactions B. Piraux, A. Galstyan, Yu. V. Popov, F. Mota-Furtado and P. F. O’Mahony Eur. Phys. J. D, 75 7 (2021) 196 Published online: 05 July 2021 DOI: 10.1140/epjd/s10053-021-00174-9