Nonlinear optical properties of a quantum well with inversely quadratic Hellman potentialA. Turkoglu, H. Dakhlaoui, A. Salman Durmuslar, M. E. Mora-Ramos and F. UnganEur. Phys. J. B, 94 5 (2021) 111DOI: https://doi.org/10.1140/epjb/s10051-021-00129-4