1. Ali, R.M., Ravichandran, V., Hussain, K.M., Subramaniant, K.G.: Differential sandwich theorems for certain analytic functions. Far East J. Math. Sci. 15(1), 87–94 (2005)
2. Al-Oboudi, F.M.: On univalent functions defined by a generalized Sălăgean operator. Int. J. Math. Math. Sci. 27, 1429–1436 (2004)
3. Amsheri, S.M., Zharkova, V.: Differential sandwich theorems of
$$p$$
p
-valent functions associated with a certain fractional derivative operator. Kragujevac Math. J. 35(3), 387–398 (2011)
4. Aouf, M.K.: Certain subclasses of multivalent prestarlike functions with negative coefficients. Demonstr. Math. 40(4), 799–814 (2007)
5. Aouf, M.K., Al-Oboudi, F.M., Haidan, M.M.: On some results for
$$\lambda -$$
λ
-
spirallike and
$$\lambda -$$
λ
-
Robertson functions of complex order. Publ. Inst. Math. Belgrade 77(91), 93–98 (2005)