A first-order differential double subordination with applications
  Let $q_1$ and $q_2$ belong to a certain class of normalized analytic univalent functions in the open unit disk of the complex plane. Sufficient conditions are obtained for normalized analytic functions $p$ to satisfy the double subordination chain $q_1(z)\prec p(z)\prec q_2(z)$. The differential sandwich-type result obtained is applied to normalized univalent functions and to $\Phi$-like functions. 
Rosihan M. Ali, Nak Eun Cho, Oh Sang Kwon, V. Ravichandran
math.CV