%0 Journal Article %A Green, R.M. %T On 321-avoiding permutations in affine Weyl groups %J Journal of Algebraic Combinatorics %D 2002 %P 241-252 %V 15 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/JAC_2002__15_3_a3/ %G en %F JAC_2002__15_3_a3