On the distance between adjacent zeros of solutions of first order differential equations with distributed delays by Hassan A. El-Morshedy, Emad Attia

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Oscillation and global asymptotic stability of a neuronic equation with two delays by Hassan A. El-Morshedy, B. M. Elmatary

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New product-type oscillation criteria for first-order linear differential equations with several nonmonotone arguments by Emad R. Attia, Hassan A. El-Morshedy

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

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Oscillation conditions for difference equations with several variable delays by Bassant M. El-Matary, Hassan A. El-Morshedy, Vasileios Benekas, Ioannis P. Stavroulakis

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