@article{MAN_1937__114_159918,
     author = {W. ACKERMANN},
     title = {Die {Widerspruchsfreiheit} der allgemeinen {Mengenlehre}},
     journal = {Mathematische Annalen},
     pages = {305--315},
     publisher = {mathdoc},
     volume = {114},
     year = {1937},
     zbl = {63.0828.04},
     url = {http://geodesic.mathdoc.fr/item/MAN_1937__114_159918/}
}