@article{JRAM_1911__140_149367,
     author = {Ernst Jacobsthal},
     title = {Zur {Theorie} der {Funktionale.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {266--276},
     publisher = {mathdoc},
     volume = {140},
     year = {1911},
     zbl = {42.0234.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1911__140_149367/}
}