Wanas, Abbas Kareem, and Madan Mohan Soren. “$K^{th}$-Order Differential Subordination Results of Analytic Functions in the Complex Plane”. Earthline Journal of Mathematical Sciences 14, no. 4 (April 7, 2024): 595-603. Accessed April 16, 2025. https://earthlinepublishers.com/index.php/ejms/article/view/858.