Application of the Homotopy Perturbation Sumudu Transformation Method Approach to the Time-Fractional Cahn-Hilliard Equation with a Double-Obstacle Potential. Adv Syst Sci Appl [Internet]. 2026 Oct. 1 [cited 2026 Oct. 15];2026(3):157-73. Available from: https://ijassa.ipu.ru/index.php/ijassa/article/view/2097