@article{JDM_1906__15_145034,
     author = {G. Frege},
     title = {\"Uber die {Grundlagen} der {Geometrie.} {III.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {423--430},
     publisher = {mathdoc},
     volume = {15},
     year = {1906},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JDM_1906__15_145034/}
}