Estimate for Initial MacLaurin Coefficients of Certain Subclasses of   Bi-univalent Functions of Complex Order Associated with the Hohlov Operator
  In this paper we introduce and investigate two new subclasses of the function class $\Sigma$ of bi-univalent functions of complex order defined in the open unit disk, which are associated with the Hohlov operator, and satisfying subordinate conditions. Furthermore, we find estimates on the Taylor-MacLaurin coefficients $|a_2|$ and $|a_3|$ for functions in these new subclasses. Several known or new consequences of these results are also pointed out. 
T. Bulboac\u{a}, G. Murugusundaramoorthy
math.CV