Atshan, W. G., Hussein Battor, A., Abaas, A. F., & Irina Oros, G. (2020). New and Extended Results On Fourth-Order Differential Subordination for Univalent Analytic Functions. Al-Qadisiyah Journal of Pure Science, 25(2), Math.1-13. https://doi.org/10.29350/qjps.2020.25.2.1066