Efficient spectral-Petrov-Galerkin methods for the integrated forms of third- and fifth-order elliptic differential equations using general parameters generalized Jacobi polynomials. - Eid H. Doha; Waleed M. Abd-Elhameed; Youssri Hassan Youssri (Appl. Math. Comput., 2012)

A Novel Operational Matrix of Caputo Fractional Derivatives of Fibonacci Polynomials: Spectral Solutions of Fractional Differential Equations. - Waleed M. Abd-Elhameed; Youssri Hassan Youssri (Entropy, 2016)

Shifted Jacobi spectral-Galerkin method for solving hyperbolic partial differential equations. - Eid H. Doha; R. M. Hafez; Youssri Hassan Youssri (Comput. Math. Appl., 2019)

Advanced shifted first-kind Chebyshev collocation approach for solving the nonlinear time-fractional partial integro-differential equation with a weakly singular kernel. - Ahmed Gamal Atta; Youssri Hassan Youssri (Comput. Appl. Math., 2022)

Numerical Contrivance for Kawahara-Type Differential Equations Based on Fifth-Kind Chebyshev Polynomials. - Waleed Mohamed Abd-Elhameed; Seraj Omar Alkhamisi; Amr Kamel Amin; Youssri Hassan Youssri (Symmetry, 2023)

A Tau Approach for Solving Time-Fractional Heat Equation Based on the Shifted Sixth-Kind Chebyshev Polynomials. - Esraa Magdy Abdelghany; Waleed Mohamed Abd-Elhameed; Galal Mahrous Moatimid; Youssri Hassan Youssri; Ahmed Gamal Atta (Symmetry, 2023)

Enhanced shifted Tchebyshev operational matrix of derivatives: two spectral algorithms for solving even-order BVPs. - Mohamed Abdelhakem; Dina Abdelhamied; Mamdouh El-Kady; Youssri Hassan Youssri (J. Appl. Math. Comput., 2023)

Chebyshev Petrov-Galerkin method for nonlinear time-fractional integro-differential equations with a mildly singular kernel. - Youssri Hassan Youssri; Ahmed Gamal Atta (J. Appl. Math. Comput., 2025)