Prem Pratap Vyas and Shashi Kant (2017) “Estimates on Initial Coefficients of Certain Subclasses of bi-univalent Functions Associated with the Class $\mathcal{P}_{m}(\beta)$”, International Journal of Mathematics And its Applications, 5(1 - B), pp. 165–169. Available at: http://ijmaa.in/index.php/ijmaa/article/view/765 (Accessed: 19 May 2024).