@article{04109081, title = {A generalization of multivalent functions with negative coefficients.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {12}, year = {1989}, pages = {493-502}, doi = {10.1155/S0161171289000633}, zbl = {0677.30011}, language = {en}, url = {http://dml.mathdoc.fr/item/04109081} }
Aouf, M.K. A generalization of multivalent functions with negative coefficients.. International Journal of Mathematics and Mathematical Sciences, Tome 12 (1989) pp. 493-502. doi : 10.1155/S0161171289000633. http://gdmltest.u-ga.fr/item/04109081/