@article{MZ_1971__119_171481,
     author = {A.J. Lohwater},
     title = {The {Boundary} {Behaviour} of {Derivatives} of {Univalent} {Functions.}},
     journal = {Mathematische Zeitschrift},
     pages = {115--120},
     publisher = {mathdoc},
     volume = {119},
     year = {1971},
     zbl = {0196.09201},
     url = {http://geodesic.mathdoc.fr/item/MZ_1971__119_171481/}
}