Ayinla, Rasheed Olawale. 2021. “Estimates of Fekete-Szego Functional of a Sub- Class of Analytic and Bi-Univalent Functions by Means of Chebyshev Polynomials”. Journal of Progressive Research in Mathematics 18 (1), 48-54. http://scitecresearch.com/journals/index.php/jprm/article/view/1979.