Coulomb Green’s functions in the problem of photodetachment of the negatively charged hydrogen ion Ilya D. Feranchuk, Dung V. Lu, Nguyen V. Hieu and Nguyen N. Hieu Eur. Phys. J. D, 73 5 (2019) 110 Published online: 23 May 2019 DOI: 10.1140/epjd/e2019-90440-6