@article{MAN_1975__215_162716,
     author = {U. Hirsch and W.D. Neumann},
     title = {On {Cyclic} {Branched} {Coverings} of {Spheres.}},
     journal = {Mathematische Annalen},
     pages = {289--291},
     publisher = {mathdoc},
     volume = {215},
     year = {1975},
     zbl = {0289.57003},
     url = {http://geodesic.mathdoc.fr/item/MAN_1975__215_162716/}
}