Hu , YuanLiu , ChangShen , HuayunZou , Shiyang and Tian , Baolin. (2024). A Unified Gas-Kinetic Particle Method for Frequency-Dependent Radiative Transfer Equations with Isotropic Scattering Process on Unstructured Mesh. Communications in Computational Physics. 35 (1). 181-211. doi:10.4208/cicp.OA-2023-0161