A. A. Hamoud, N. M. Mohammed, and K. P. Ghadle, “Existence, Uniqueness and Stability Results for Nonlocal Fractional Nonlinear Volterra-Fredholm Integro Differential Equations”, DNC, vol. 11, no. 2, pp. 343–352, Aug. 2026, doi: 10.5890/DNC.2022.06.013.