@article{05686860,
title = {Rationality, irrationality, and Wilf equivalence in generalized factor order.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {16},
year = {2009},
zbl = {1187.05010},
language = {en},
url = {http://dml.mathdoc.fr/item/05686860}
}
Kitaev, Sergey; Liese, Jeffrey; Remmel, Jeffrey; Sagan, Bruce E. Rationality, irrationality, and Wilf equivalence in generalized factor order.. The Electronic Journal of Combinatorics [electronic only], Tome 16 (2009) . http://gdmltest.u-ga.fr/item/05686860/