C. S. . Varun Bose, R. . Udhayakumar, V. . Muthukumaran, and S. . Al-Omari, “A Study on Approximate Controllability of Ψ-Caputo Fractional Differential Equations with Impulsive Effects”, Contemp. Math., vol. 5, no. 1, pp. 175–198, Jan. 2024.