@article{SLC_2002-2004_49_a4,
     author = {G\'erald Ksavrelof and Jiang Zeng},
     title = {Two {Involutions} for {Signed} {Excedance} {Numbers}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {2002-2004},
     volume = {49},
     url = {http://geodesic.mathdoc.fr/item/SLC_2002-2004_49_a4/}
}