@article{02221793,
title = {The generalized Schr\"oder theory.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {12},
year = {2005},
zbl = {1077.05010},
language = {en},
url = {http://dml.mathdoc.fr/item/02221793}
}
Song, Chunwei. The generalized Schröder theory.. The Electronic Journal of Combinatorics [electronic only], Tome 12 (2005) . http://gdmltest.u-ga.fr/item/02221793/