@article{JAC_2002__15_3_a3,
     author = {Green, R.M.},
     title = {On 321-avoiding permutations in affine {Weyl} groups},
     journal = {Journal of Algebraic Combinatorics},
     pages = {241--252},
     publisher = {mathdoc},
     volume = {15},
     number = {3},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2002__15_3_a3/}
}