A Positivity-Preserving Second-Order BDF Scheme for the Cahn-Hilliard Equation with Variable Interfacial Parameters. Commun. Comput. Phys. [Internet]. 2020 July 21 [cited 2026 Mar. 14];28(3):967-98. Available from: https://gsp.tricubic.dev/cicp/article/view/6867