Irmak, HÄuseyin y R. K. Raina. «The starlikeness and convexity of multivalent functions involving certain inequalities». Revista Matemática Complutense, vol. 16, vol. 16, n.º 2, 2003, pp. 391-8, doi: https://doi.org/10.5209/rev_REMA.2003.v16.n2.16810.