@article{SLC_2004-2005_51_a3,
     author = {Ron M. Adin and Yuval Roichman},
     title = {Equidistribution and {Sign-Balance} on {321-Avoiding} {Permutations}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {2004-2005},
     volume = {51},
     url = {http://geodesic.mathdoc.fr/item/SLC_2004-2005_51_a3/}
}