@article{JDM_1908__17_145121,
     author = {Hugo Dingler},
     title = {\"Uber },
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {267--271},
     publisher = {mathdoc},
     volume = {17},
     year = {1908},
     zbl = {39.0079.02},
     url = {http://geodesic.mathdoc.fr/item/JDM_1908__17_145121/}
}