Sokol, Janusz, and Deepak Bansal. “Coefficients Bounds in Some Subclass of Analytic Functions”. Tamkang Journal of Mathematics 43, no. 4 (December 30, 2012): 621–630. Accessed March 28, 2024. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/1020.