@article{MAN_1976__220_162828,
     author = {Stephan Ruscheweyh},
     title = {An {Extension} of {Becker's} {Univalence} {Condition.}},
     journal = {Mathematische Annalen},
     pages = {285--290},
     publisher = {mathdoc},
     volume = {220},
     year = {1976},
     zbl = {0318.30015},
     url = {http://geodesic.mathdoc.fr/item/MAN_1976__220_162828/}
}