On stability of nonlinear systems of functional differential equations. - M. M. A. El-Sheikh; A. A. Soliman (Appl. Math. Comput., 2000)

Oscillation criteria for second order functional differential equations. - M. M. A. El-Sheikh; R. Sallam (Appl. Math. Comput., 2000)

On stability of nonlinear systems of ordinary differential equations. - M. M. A. El-Sheikh; A. A. Soliman; M. H. Abdalla (Appl. Math. Comput., 2000)

On stability of nonlinear differential systems via cone-valued Liapunov function method. - M. M. A. El-Sheikh; A. A. Soliman; M. H. Abdalla (Appl. Math. Comput., 2001)

Stability of Nonlinear Fractional Delay Differential Equations. - D. A. Refaai; M. M. A. El-Sheikh; Gamal A. F. Ismail; Mohammed Zakarya; Ghada AlNemer; Haytham M. Rezk (Symmetry, 2022)

Stability analysis of COVID-19 model with fractional-order derivative and a delay in implementing the quarantine strategy. - M. M. Hikal; M. M. A. El-Sheikh; Waheed K. Zahra (J. Appl. Math. Comput., 2022)

Dynamical and Phase Analyses on Chaos Control of Discrete Predator-Prey Systems of Mixed Holling Types with Density-Dependent Birth Rates. - A. M. Madian; Mohammed Fathy Elettreby; M. M. A. El-Sheikh; A. A. El-Gaber (Int. J. Bifurc. Chaos, 2024)