@article{1138847176,
author = {Oikawa, K\'otaro},
title = {On angular derivatives of univalent functions},
journal = {Kodai Math. Sem. Rep.},
volume = {27},
number = {1-2},
year = {1976},
pages = { 193-210},
language = {en},
url = {http://dml.mathdoc.fr/item/1138847176}
}
Oikawa, Kótaro. On angular derivatives of univalent functions. Kodai Math. Sem. Rep., Tome 27 (1976) no. 1-2, pp. 193-210. http://gdmltest.u-ga.fr/item/1138847176/