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)

Oscillation tests for difference equations with non-monotone retarded arguments. - Emad R. Attia; George E. Chatzarakis (Appl. Math. Lett., 2022)

Iterative oscillation criteria for first-order difference equations with non-monotone advanced arguments. - Emad R. Attia; George E. Chatzarakis (J. Appl. Math. Comput., 2022)

New oscillation criteria for first-order difference equations with several not necessarily monotonic delays. - Emad R. Attia; Shahad M. Alotaibi; George E. Chatzarakis (J. Appl. Math. Comput., 2024)