@article{MAN_1981__256_163517,
     author = {Enrico Arabello and Maurizio Cornalba},
     title = {Footnotes to a {Paper} of {Beniamino} {Segre.} {The} {Number} of g1d's on a {General} {d-Gonal} {Curve,} and the {Unirationality} of the {Hurwitz} {Spaces} of {4-Gonal} and {5-Gonal} {Curves.}},
     journal = {Mathematische Annalen},
     pages = {341--362},
     publisher = {mathdoc},
     volume = {256},
     year = {1981},
     zbl = {0454.14023},
     url = {http://geodesic.mathdoc.fr/item/MAN_1981__256_163517/}
}