ABBAS, Mohamed I. “Non-Instantaneous Impulsive Fractional Integro-Differential Equations With Proportional Fractional Derivatives With Respect to Another Function”. Studia Universitatis Babeș-Bolyai Mathematica 68, no. 3 (September 30, 2023): 543–562. Accessed January 19, 2026. https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/6447.