@article{01413187,
title = {An infinite antichain of permutations.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {7},
year = {2000},
zbl = {0940.05002},
language = {en},
url = {http://dml.mathdoc.fr/item/01413187}
}
Spielmann, Daniel A.; Bóna, Miklós. An infinite antichain of permutations.. The Electronic Journal of Combinatorics [electronic only], Tome 7 (2000) . http://gdmltest.u-ga.fr/item/01413187/