Coulomb Green’s functions in the problem of photodetachment of the negatively charged hydrogen ionIlya D. Feranchuk, Dung V. Lu, Nguyen V. Hieu and Nguyen N. HieuEur. Phys. J. D, 73 5 (2019) 110DOI: https://doi.org/10.1140/epjd/e2019-90440-6