@article{SLC_2008-2010_59_a1,
     author = {C\'eline Righi},
     title = {Number of "udu"s of a {Dyck} {Path} and {ad-Nilpotent} {Ideals} of {Parabolic} {Subalgebras} of {sll+1(C)}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {59},
     year = {2008-2010},
     url = {http://geodesic.mathdoc.fr/item/SLC_2008-2010_59_a1/}
}