On Nonlinear Ψ-Caputo Fractional Integro Differential Equations Involving Non-Instantaneous Conditions. - Ramasamy Arul; Panjayan Karthikeyan; Kulandhaivel Karthikeyan; Palanisamy Geetha; Ymnah Alruwaily; Lamya Almaghamsi; El-Sayed El-Hady (Symmetry, 2023)