@article{MAN_1907__64_158329,
     author = {J. Hjelmslev},
     title = {Neue {Begr\"undung} der ebenen {Geometrie.} {(Mit} 7 {Figuren} im {Text).}},
     journal = {Mathematische Annalen},
     pages = {449--474},
     publisher = {mathdoc},
     volume = {64},
     year = {1907},
     zbl = {38.0504.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1907__64_158329/}
}