@article{MZ_1973__130_171848,
     author = {Herbert Amann and Stanley A. Weiss},
     title = {On the {Uniqueness} of the {Topological} {Degree.}},
     journal = {Mathematische Zeitschrift},
     pages = {39--54},
     publisher = {mathdoc},
     volume = {130},
     year = {1973},
     zbl = {0249.55004},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__130_171848/}
}