@article{CM_1938__5__166_0,
     author = {Rothe, Erich},
     title = {\"Uber den {Abbildungsgrad} bei {Abbildungen} von {Kugeln} des {Hilbertschen} {Raumes}},
     journal = {Compositio Mathematica},
     pages = {166--176},
     publisher = {Johnson Reprint Corporation},
     volume = {5},
     year = {1938},
     zbl = {0017.36004},
     language = {de},
     url = {http://archive.numdam.org/item/CM_1938__5__166_0/}
}