Mushtt IZ, Hameed DM, Mohamad HA. Nonoscillatory Properties of Fourth Order Nonlinear Neutral Differential equation. Iraqi Journal of Science [Internet]. 2023 Feb. 28 [cited 2026 Jan. 5];64(2):798-803. Available from: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/6328