@article{MAN_1967__171_161560,
     author = {H. WOLFF},
     title = {Minkowskische und absolute {Geometrie} {II.}},
     journal = {Mathematische Annalen},
     pages = {165--193},
     publisher = {mathdoc},
     volume = {171},
     year = {1967},
     url = {http://geodesic.mathdoc.fr/item/MAN_1967__171_161560/}
}