@article{GDZPPN002257394,
title = {Stetigkeit und Differentialquotient},
journal = {Mathematische Annalen},
volume = {51},
year = {1899},
pages = {58-69},
zbl = {30.0265.02},
url = {http://dml.mathdoc.fr/item/GDZPPN002257394}
}
Steinitz, Ernst. Stetigkeit und Differentialquotient. Mathematische Annalen, Tome 51 (1899) pp. 58-69. http://gdmltest.u-ga.fr/item/GDZPPN002257394/