Karthikeyan, P. and Keerthivasan, K. 2026. Existence of Solutions for Mixed Fractional Integro-differential Equations in Banach Spaces. Discontinuity, Nonlinearity, and Complexity. 15, 3 (Aug. 2026), 439–450. DOI:https://doi.org/10.5890/DNC.2026.09.011.