@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/}
}