Almalahi MA, Panchal SK. Some existence and stability results for ψ-Hilfer fractional implicit differential equation with periodic conditions: ψ-Hilfer Fractional Implicit Differential Equation. J. Math. Anal. Model. [Internet]. 2020 Dec. 3 [cited 2025 Oct. 10];1(1):1-19. Available from: https://sabapub.com/index.php/jmam/article/view/4