@article{MAN_1928__98_159226,
     author = {A. Heyting},
     title = {Zur intuitionistischen {Axiomatik} der projektiven {Geometrie}},
     journal = {Mathematische Annalen},
     pages = {491--538},
     publisher = {mathdoc},
     volume = {98},
     year = {1928},
     zbl = {53.0541.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1928__98_159226/}
}