@article{GDZPPN002404370,
title = {On an Extremal Problem in Univalent Functions.},
journal = {Mathematische Zeitschrift},
volume = {111},
year = {1969},
pages = {344-348},
zbl = {0174.12201},
url = {http://dml.mathdoc.fr/item/GDZPPN002404370}
}
Thomas, Derek Keith. On an Extremal Problem in Univalent Functions.. Mathematische Zeitschrift, Tome 111 (1969) pp. 344-348. http://gdmltest.u-ga.fr/item/GDZPPN002404370/