Cho, Nak Eun et Bulboaca, Teodor, Subordination and superordination properties for a class of integral operators, Acta mathematica Sinica. English series (Print) , 26(3), 2010, pp. 515-522
In the present paper, we obtain some subordination- and superordination-preserving properties of certain integral operators defined on the space of normalized analytic functions in the open unit disk. The sandwich-type theorems for these integral operators are also considered