Wilf classes of pairs of permutations of length 4.
Le, Ian
The Electronic Journal of Combinatorics [electronic only], Tome 12 (2005), / Harvested from The Electronic Library of Mathematics
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Publié le : 2005-01-01
EUDML-ID : urn:eudml:doc:125569 
@article{02221765,
     title = {Wilf classes of pairs of permutations of length 4.},
     journal = {The Electronic Journal of Combinatorics [electronic only]},
     volume = {12},
     year = {2005},
     zbl = {1081.05002},
     language = {en},
     url = {http://dml.mathdoc.fr/item/02221765}
}

Le, Ian. Wilf classes of pairs of permutations of length 4.. The Electronic Journal of Combinatorics [electronic only], Tome 12 (2005) . http://gdmltest.u-ga.fr/item/02221765/