Dr. Gagandeep Singh, Gurcharanjit Singh, and Harjinder Singh. “A New Subclass of Univalent Functions”. Global Journal of Science Frontier Research 18, no. F3 (March 15, 2018): 29–36. Accessed May 9, 2024. https://journalofscience.org/index.php/GJSFR/article/view/2239.