@article{SLC_1993_30_a6,
     author = {Serge Dulucq and Sophie Gire and Olivier Guibert and Julian West},
     title = {Enum\'eration de permutations \`a motifs exclus},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {30},
     year = {1993},
     url = {http://geodesic.mathdoc.fr/item/SLC_1993_30_a6/}
}