A. A. Hamoud, A. D. Khandagale, R. Shah, and K. P. Ghadle, “Some New Results on Hadamard Neutral Fractional Nonlinear Volterra-Fredholm Integro-Differential Equations”, DNC, vol. 12, no. 4, pp. 893–903, Aug. 2026, doi: 10.5890/DNC.2023.12.013.