@article{GDZPPN002429780, title = {Properties of Some Extremal Nonvanishing Univalent Functions.}, journal = {Mathematische Zeitschrift}, volume = {185}, year = {1984}, pages = {519-526}, zbl = {0576.30015}, url = {http://dml.mathdoc.fr/item/GDZPPN002429780} }
Brown, Johnny E. Properties of Some Extremal Nonvanishing Univalent Functions.. Mathematische Zeitschrift, Tome 185 (1984) pp. 519-526. http://gdmltest.u-ga.fr/item/GDZPPN002429780/