Aldawish, Ibtisam, and Maslina Darus. “On Certain Class of Meromorphic Harmonic Concave Functions”. Tamkang Journal of Mathematics 46, no. 2 (June 30, 2015): 101–109. Accessed December 22, 2024. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/1599.