@article{JRAM_1977__290_151834,
     author = {James L. Frank},
     title = {Subordination and convex univalent polynomials.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {63--69},
     year = {1977},
     volume = {290},
     zbl = {0498.30014},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1977__290_151834/}
}