Sharp coefficient estimates for certain subclasses of starlike functions of complex order

In this paper, the authors derive several sharp coefficient estimates for the subclassesS(λ,γ,A,B)andK(λ,γ,A,B,m;μ)of the class of normalized starlike functions of complex order γ∈C⧹{0}γ∈C⧹{0}. The results presented here would generalize as well as improve the recent work by Srivastava et al. (2011) [20]. Some closely-related open problems are also posed.