The objective of this paper is to obtain an upper bound to the second Hankel determinant |a₂ a₄-a₃²| for starlike and convex functions of order α (0 ≤ α<1) also for the inverse function of f, belonging to the class of convex functions of order α, using Toeplitz determinants.

Tbilisi Mathematical Journal, Vol. 5(1) (2012), pp. 65-76