Coefficient Problems for Bi-Univalent Functions via $q$–Rabotnov Kernels and $q$–Fibonacci Subordination. Eur. J. Pure Appl. Math. [Internet]. 2025 Nov. 5 [cited 2025 Dec. 5];18(4):7125. Available from: https://www.ejpam.com/index.php/ejpam/article/view/7125