Shenan, Jamal M., and Ahmed S. Galiz. “Differential Subordination and Superordination for Certain Subclasses of P-Valent Functions”. JOURNAL OF ADVANCES IN MATHEMATICS 6, no. 3 (February 22, 2014): 1071–1083. Accessed May 18, 2024. https://rajpub.com/index.php/jam/article/view/3663.