@article{MZ_1950__53_169167,
     author = {W. NEUMER},
     title = {\"Uber den {Aufbau} der {Ordnungszahlen}},
     journal = {Mathematische Zeitschrift},
     pages = {59--69},
     publisher = {mathdoc},
     volume = {53},
     year = {1950},
     zbl = {0037.32003},
     url = {http://geodesic.mathdoc.fr/item/MZ_1950__53_169167/}
}