Atshan, Waggas Galib, and Haneen Zaghir Hassan. “Differential Sandwich Results For Univalent Functions”. Al-Qadisiyah Journal of Pure Science 25, no. 1 (March 9, 2020): Math 55-59. Accessed January 18, 2026. https://journalsc.qu.edu.iq.51-77-64-103.cpanel.site/index.php/JOPS/article/view/1045.