Darus, Maslina, and Imran Faisal. “A Study about Certain Subclasses of Analytic Functions”. Annales Mathematicae Silesianae 25 (September 30, 2011): 59–66. Accessed June 24, 2025. https://journals.us.edu.pl/index.php/AMSIL/article/view/14022.