L. A. Palve, M. S. Abdo, and S. K. Panchal, “Some Existence and Stability Results of Hilfer-Hadmard Fractional Implicit Differential Equation in a Weighted Space”, DNC, vol. 10, no. 2, pp. 207–225, Aug. 2026, doi: 10.5890/DNC.2021.06.004.