ALMALAHI, M. A.; PANCHAL, S. K. Some existence and stability results for ψ-Hilfer fractional implicit differential equation with periodic conditions: ψ-Hilfer Fractional Implicit Differential Equation. Journal of Mathematical Analysis and Modeling, [S. l.], v. 1, n. 1, p. 1–19, 2020. DOI: 10.48185/jmam.v1i1.4. Disponível em: https://sabapub.com/index.php/jmam/article/view/4. Acesso em: 10 oct. 2025.