@article{02107496,
title = {Generalizing Narayana and Schr\"oder numbers to higher dimensions.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {11},
year = {2004},
zbl = {1057.05006},
language = {en},
url = {http://dml.mathdoc.fr/item/02107496}
}
Sulanke, Robert A. Generalizing Narayana and Schröder numbers to higher dimensions.. The Electronic Journal of Combinatorics [electronic only], Tome 11 (2004) . http://gdmltest.u-ga.fr/item/02107496/