@article{GDZPPN002306239,
title = {Homogene 4-dimensionale affine Ebenen.},
journal = {Mathematische Annalen},
volume = {196},
year = {1972},
pages = {320-322},
zbl = {0221.50008},
url = {http://dml.mathdoc.fr/item/GDZPPN002306239}
}
Salzmann, Helmut. Homogene 4-dimensionale affine Ebenen.. Mathematische Annalen, Tome 196 (1972) pp. 320-322. http://gdmltest.u-ga.fr/item/GDZPPN002306239/