@article{JRAM_1980__319_152280,
     author = {D.G. James},
     title = {Projective geometry for orthogonal groups.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {104--117},
     publisher = {mathdoc},
     volume = {319},
     year = {1980},
     zbl = {0425.20042},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1980__319_152280/}
}