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Alsait, Amera, and Nagat Alabbar. “Fekete -Szego Problem for Starlike of Complex Functions of Order Related  to Generalized  Derivative Operator    ”. Journal of Humanitarian and Applied Sciences 4, no. 8 (December 31, 2019): 321–331. Accessed July 3, 2024. https://khsj.elmergib.edu.ly/index.php/jhas/article/view/136.