@article{01357394,
title = {A combinatorial interpretation of the area of Schr\"oder paths.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {6},
year = {1999},
zbl = {0931.05005},
language = {en},
url = {http://dml.mathdoc.fr/item/01357394}
}
Pergola, E.; Pinzani, R. A combinatorial interpretation of the area of Schröder paths.. The Electronic Journal of Combinatorics [electronic only], Tome 6 (1999) . http://gdmltest.u-ga.fr/item/01357394/