@article{GDZPPN002310821, title = {Unstable Bundles and Branched Structures on Riemann Surfaces.}, journal = {Mathematische Annalen}, volume = {217}, year = {1975}, pages = {49-60}, zbl = {0294.30007}, url = {http://dml.mathdoc.fr/item/GDZPPN002310821} }
Mandelbaum, Richard. Unstable Bundles and Branched Structures on Riemann Surfaces.. Mathematische Annalen, Tome 217 (1975) pp. 49-60. http://gdmltest.u-ga.fr/item/GDZPPN002310821/