%0 Journal Article %A Bertram, Wolfgang %T The geometry of null systems, Jordan algebras and von Staudt's theorem %J Annales de l'Institut Fourier %D 2003 %P 193-225 %V 53 %N 1 %I Association des Annales de l’institut Fourier %U https://aif.centre-mersenne.org/articles/10.5802/aif.1942/ %R 10.5802/aif.1942 %G en %F AIF_2003__53_1_193_0