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@article{MAN_1986__276_164208, author = {Richard Skora}, title = {The {Degree} of a {Map} {Between} {Surfaces.}}, journal = {Mathematische Annalen}, pages = {415--424}, publisher = {mathdoc}, volume = {276}, year = {1986}, zbl = {0595.57011}, url = {http://geodesic.mathdoc.fr/item/MAN_1986__276_164208/} }
Richard Skora. The Degree of a Map Between Surfaces.. Mathematische Annalen, Tome 276 (1986), pp. 415-424. http://geodesic.mathdoc.fr/item/MAN_1986__276_164208/