Bessel Collocation Method for Solving Fredholm-Volterra Integro-Fractional Differential Equations of Multi-High Order in the Caputo Sense. - Shazad Shawki Ahmed; Shabaz Jalil MohammedFaeq (Symmetry, 2021)

Solving a System of Fractional-Order Volterra Integro-Differential Equations Based on the Explicit Finite Difference Approximation via the Trapezoid Method with Error Analysis. - Shazad Shawki Ahmed (Symmetry, 2022)

Numerical Computation of Mixed Volterra-Fredholm Integro-Fractional Differential Equations by Using Newton-Cotes Methods. - Shazad Shawki Ahmed; Hiwa Abdullah Rasol (Symmetry, 2022)

Solving a System of Caputo Fractional-Order Volterra Integro-Differential Equations with Variable Coefficients Based on the Finite Difference Approximation via the Block-by-Block Method. - Shazad Shawki Ahmed; Shokhan Ahmed Hamasalih (Symmetry, 2023)

An Effective Method for Solving Fractional Integrodifferential Equations of the Volterra and Fredholm Types Based on the Lucas Polynomials. - Shabaz Jalil MohammedFaeq; Miran Bayan Mohammed Amin; Dashne Chapuk Zahir; Shazad Shawki Ahmed (J. Appl. Math., 2025)

Application of quadratic B-spline functions for solving nonlinear models of multi-fractional Volterra integro-differential equations. - Mariwan Rashid Ahmed; Shazad Shawki Ahmed; Pishtiwan Othman Sabir (Commun. Nonlinear Sci. Numer. Simul., 2026)