Xu, Qing Hua et al., On the Fekete and Szegö problem for starlike mappings of order ., Acta mathematica Sinica. English series (Print) , 33(4), 2017, pp. 554-564
Let S *. be the familiar class of normalized starlike functions of order . in the unit disk. In this paper, we establish the Fekete and Szegö inequality for the class S *., and then we generalize this result to the unit ball in a complex Banach space or on the unit polydisk in Cn.