System of Nonlinear (k, ψ)-Hilfer Fractional Order Hybrid Boundary Value Problems. Contemporary Mathematics , [S. l.], v. 5, n. 3, p. 3434–3461, 2024. DOI: 10.37256/cm.5320244974. Disponível em: https://ojs353.mebyme.cn/index.php/CM/article/view/4974. Acesso em: 24 dec. 2025.