A Four-State HLL Riemann Solver for Numerical Simulation of Magneto-Hydrodynamics Based on the Least Squares Solution for the Middle Wave. Communications in Computational Physics, [S. l.], v. 37, n. 3, p. 675–700, 2025. DOI: 10.4208/cicp.OA-2024-0132. Disponível em: https://global-sci.com/index.php/cicp/article/view/17107. Acesso em: 6 dec. 2025.