@article{MAN_1899__52_157932,
     author = {Ernst Steinitz},
     title = {Stetigkeit und {Differentialquotient}},
     journal = {Mathematische Annalen},
     pages = {58--69},
     year = {1899},
     volume = {52},
     zbl = {30.0265.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1899__52_157932/}
}