Criteria for the Oscillation of Solutions to Linear Second-Order Delay Differential Equation with a Damping Term. - Osama Moaaz; Elmetwally M. Elabbasy; Jan Awrejcewicz; Aml Abdelnaser (Axioms, 2021)

Oscillation Test for Second-Order Differential Equations with Several Delays. - Aml Abdelnaser; Osama Moaaz; Clemente Cesarano; Sameh S. Askar; Elmetwally M. Elabbasy (Symmetry, 2023)