Computing Three-Dimensional Freeform Reflectors with a Scattering Surface Vì C.E. Kronberg, Martijn J.H. Anthonissen, Jan H.M. ten Thije Boonkkamp and Wilbert L. IJzerman EPJ Web Conf., 287 (2023) 02007 Published online: 18 October 2023 DOI: 10.1051/epjconf/202328702007