Ghandor, Wadii, Ahmed Aberqi, Zoubida Ech-chaffani, and Touria Karite. 2026. “Controllability of Fractional Differential Systems With State and Control Delay by Using Riemann--Liouville Fractional Derivatives”. Discontinuity, Nonlinearity, and Complexity 15 (3): 381-94. https://doi.org/10.5890/DNC.2026.09.007.