@article{05903022,
title = {Exterior pairs and up step statistics on Dyck paths.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {18},
year = {2011},
zbl = {1217.05023},
language = {en},
url = {http://dml.mathdoc.fr/item/05903022}
}
Eu, Sen-Peng; Fu, Tung-Shan. Exterior pairs and up step statistics on Dyck paths.. The Electronic Journal of Combinatorics [electronic only], Tome 18 (2011) . http://gdmltest.u-ga.fr/item/05903022/