. "CERTAIN SPECIAL DIFFERENTIAL SUPERORDINATIONS USING LINEAR OPERATOR Vol. 4(2) July 2013, No. 10, pp. 260-266 R. M. EL-ASHWAH, M. K. AOUF AND S. M. EL-DEEB". Journal of Fractional Calculus and Applications, 4, 2, 2013, 260-266. doi: 10.21608/jfca.2013.283804