Li, Shuhai, Huo Tang, Lina Ma, and Ao En. “Generalized k–uniformly Convex Harmonic Functions With Negative Coefficients”. Tamkang Journal of Mathematics 48, no. 2 (June 30, 2017): 185–202. Accessed April 29, 2024. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/2326.