Irmak, HÄuseyin, y R. K. Raina. «The Starlikeness and Convexity of Multivalent Functions Involving Certain Inequalities». Revista Matemática Complutense 16, no. 2 (enero 1, 2003): 391–398. https://doi.org/10.5209/rev_REMA.2003.v16.n2.16810.