Scattering of Ricci scalar perturbations from Schwarzschild black holes in modified gravityDan B. Sibandze, Rituparno Goswami, Sunil D. Maharaj, Anne Marie Nzioki and Peter K. S. DunsbyEur. Phys. J. C, 77 6 (2017) 364DOI: https://doi.org/10.1140/epjc/s10052-017-4936-0