Approximate Solution of Time- Fractional Hirota-Satsuma Coupled KdV Equations by Hybrid ZZ Transform with Homotopy Perturbation Method. sjpas [Internet]. 2024 Dec. 30 [cited 2026 Apr. 19];6(4):271-9. Available from: https://sjpas.com/index.php/sjpas/article/view/1007