Sandwich-type theorems for multivalent functions associated with the Srivastava–Attiya operator

In the present paper, we investigate some subordination- and superordination-preserving properties for certain classes of analytic and multivalent functions in the open unit disk, which are associated with such multiplier transformations as the Srivastava–Attiya operator. Various sandwich-type theorems for functions belonging to these classes are also obtained.