@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/