. "ON CERTAIN CLASSES OF UNIVALENT FUNCTIONS WITH NEGATIVE COEFFICIENTS DEFINED BY CONVOLUTION Vol. 4(1) Jan. 2016, No. 13, pp. 143-154 H. E. DARWISH, A.Y. LASHIN, E. M. MADAR", Electronic Journal of Mathematical Analysis and Applications, 4, 1, 2016, -. doi: 10.21608/ejmaa.2016.310820