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@article{MAN_1979__245_163322, author = {Allan L. Edmonds}, title = {Deformation of {Maps} to {Branched} {Coverings} in {Dimension} {Three.}}, journal = {Mathematische Annalen}, pages = {273--279}, publisher = {mathdoc}, volume = {245}, year = {1979}, zbl = {0406.57003}, url = {http://geodesic.mathdoc.fr/item/MAN_1979__245_163322/} }
Allan L. Edmonds. Deformation of Maps to Branched Coverings in Dimension Three.. Mathematische Annalen, Tome 245 (1979), pp. 273-279. http://geodesic.mathdoc.fr/item/MAN_1979__245_163322/