@article{MAN_1975__214_162680,
     author = {Richard Mandelbaum},
     title = {Unstable {Bundles} and {Branched} {Structures} on {Riemann} {Surfaces.}},
     journal = {Mathematische Annalen},
     pages = {49--60},
     publisher = {mathdoc},
     volume = {214},
     year = {1975},
     zbl = {0294.30007},
     url = {http://geodesic.mathdoc.fr/item/MAN_1975__214_162680/}
}