@article{MZ_1954__60_169420,
     author = {Herbert Naumann},
     title = {Stufen der {Begr\"undung} der ebenen affinen {Geometrie.}},
     journal = {Mathematische Zeitschrift},
     pages = {120--141},
     publisher = {mathdoc},
     volume = {60},
     year = {1954},
     zbl = {0056.38505},
     url = {http://geodesic.mathdoc.fr/item/MZ_1954__60_169420/}
}