%0 Journal Article %A Somia Muftah Amsheri %A Valentina Zharkova %T Differential sandwich theorems of $p$-valent functions associated with a certain fractional derivative operator %J Kragujevac Journal of Mathematics %D 2011 %P 387 %V 35 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/KJM_2011_35_3_a3/ %G en %F KJM_2011_35_3_a3