@article{MAN_1925__93_159075,
     author = {W. ACKERMANN},
     title = {Begr\"undung des ,,tertium non datur},
     journal = {Mathematische Annalen},
     pages = {1--36},
     year = {1925},
     volume = {93},
     zbl = {50.0023.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1925__93_159075/}
}