The object of the present paper is to derive several interesting properties of the class $T_n\lam$ consisting of analytic and univalent functions with negative coefficients. Coefficient inequalities, distortion theorems and closure theorems of functions in the class $T_n\lam$ are determined. Also radii of close-to-convexity, starlikeness and convexity are determined. Furthermore, integral operators and modified Hadamard products of several functions belonging to the class $Tn\lam$ are studied here.
Aouf, M. K. and Cho, Nak Eun (1998) "On a Certain Subclass of Analytic Functions with Negative Cefficients," Turkish Journal of Mathematics: Vol. 22: No. 1, Article 2. Available at: https://journals.tubitak.gov.tr/math/vol22/iss1/2