Atshan, Waggas Galib, Ihsan Ali Abbas, and Sibel Yalcin. 2020. “New Concept on Fourth-Order Differential Subordination and Superordination With Some Results for Multivalent Analytic Functions”. Journal of Al-Qadisiyah for Computer Science and Mathematics 12 (1):Math Page 96-107. https://doi.org/10.29304/jqcm.2020.12.1.681.