New oscillation criteria for second order linear difference equations with positive and negative coefficients. - Hassan A. El-Morshedy (Comput. Math. Appl., 2009)

The distribution of zeros of all solutions of first order neutral differential equations. - Faroq A. Baker; Hassan A. El-Morshedy (Appl. Math. Comput., 2015)

New oscillation criterion for delay differential equations with non-monotone arguments. - Hassan A. El-Morshedy; Emad R. Attia (Appl. Math. Lett., 2016)

Oscillation Criteria for First Order Differential Equations with Non-Monotone Delays. - Emad R. Attia; Hassan A. El-Morshedy; Ioannis P. Stavroulakis (Symmetry, 2020)

Asymptotic Convergence in Delay Differential Equations Arising in Epidemiology and Physiology. - Hassan A. El-Morshedy; Alfonso Ruiz-Herrera (SIAM J. Appl. Math., 2021)