@article{MZ_1984__187_173509,
     author = {Johnny E. Brown},
     title = {Properties of {Some} {Extremal} {Nonvanishing} {Univalent} {Functions.}},
     journal = {Mathematische Zeitschrift},
     pages = {519--526},
     publisher = {mathdoc},
     volume = {187},
     year = {1984},
     zbl = {0576.30015},
     url = {http://geodesic.mathdoc.fr/item/MZ_1984__187_173509/}
}