Panigrahi T, Pattnayak E, El-Ashwah RM. Third Hankel determinant for the class of analytic functions defined by Mathieu-type series related to a petal-shaped domain. Ukr. Mat. Zhurn. [Internet]. 2024 Apr. 26 [cited 2025 Dec. 5];76(4):525-32. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/7335