@article{03691669, title = {On the Hankel determinants of close-to-convex univalent functions.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {3}, year = {1980}, pages = {477-481}, doi = {10.1155/S016117128000035X}, zbl = {0443.30015}, language = {en}, url = {http://dml.mathdoc.fr/item/03691669} }
Noor, K.Inayat. On the Hankel determinants of close-to-convex univalent functions.. International Journal of Mathematics and Mathematical Sciences, Tome 3 (1980) pp. 477-481. doi : 10.1155/S016117128000035X. http://gdmltest.u-ga.fr/item/03691669/