@article{JRAM_1846__33_183265,
     author = {R. Hoppe},
     title = {Ueber independente {Darstellung} der h\"ohern {Differentialquotienten} und den {Gebrauch} des {Summenzeichens.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {78--89},
     publisher = {mathdoc},
     volume = {33},
     year = {1846},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1846__33_183265/}
}