%0 Journal Article %A S. Azam %T Extended Affine Root Systems %J Journal of Lie Theory %D 2002 %P 515-527 %V 12 %N 2 %U https://jolt.centre-mersenne.org/articles/10.5802/jolt.278/ %R 10.5802/jolt.278 %F JOLT_2002_12_2_a12