%0 Journal Article %A Cellini, Paola %A Papi, Paolo %T A root system criterion for fully commutative and short braid-avoiding elements in affine Weyl groups %J Journal of Algebraic Combinatorics %D 2000 %P 5-16 %V 11 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JAC_2000__11_1_a4/ %G en %F JAC_2000__11_1_a4