@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/