EXPLICIT FORMULAS FOR THE DERIVATIVES AND DECOMPOSITIONS BY THE POLYNOMIAL COEFFICIENTS AND EXTENSION TO HYPERBOLIC FUNCTIONS AS NEW SOLUTION PROTOTYPES FOR KdV EQUATION. FEJDS [Internet]. 2024 Mar. 20 [cited 2026 Jan. 5];37(1):13-49. Available from: https://pphmjopenaccess.com/fejds/article/view/1572