@article{MZ_1936__40_168619,
     author = {O. H\"older},
     title = {Verallgemeinerung einer {Formel} von hacks},
     journal = {Mathematische Zeitschrift},
     pages = {463--468},
     publisher = {mathdoc},
     volume = {40},
     year = {1936},
     zbl = {61.0064.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1936__40_168619/}
}