@article{02129192,
title = {A sufficient condition for univalency.},
journal = {General Mathematics},
volume = {4},
year = {1996},
pages = {87-97},
zbl = {1052.30501},
language = {en},
url = {http://dml.mathdoc.fr/item/02129192}
}
Ovesea, Horiana; Radomir, Irinel; Pascu, Radu N. A sufficient condition for univalency.. General Mathematics, Tome 4 (1996) pp. 87-97. http://gdmltest.u-ga.fr/item/02129192/