Some Subclasses of Univalent and Bi-Univalent Functions Related to K-Fibonacci Numbers and Modified Sigmoid Function. Baghdad Sci.J [Internet]. 2023 Jun. 1 [cited 2025 Jun. 3];20(3):0843. Available from: https://bsj-ojs.uobaghdad.edu.iq/index.php/BSJ/article/view/6888