@article{JDM_1935__45_146079,
     author = {F. Pfeiffer},
     title = {Die projektive {Skala.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {144--169},
     publisher = {mathdoc},
     volume = {45},
     year = {1935},
     zbl = {61.0594.01},
     url = {http://geodesic.mathdoc.fr/item/JDM_1935__45_146079/}
}