@article{05686785,
title = {Updown numbers and the initial monomials of the slope variety.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {16},
year = {2009},
zbl = {1186.05014},
language = {en},
url = {http://dml.mathdoc.fr/item/05686785}
}
Martin, Jeremy L.; Wagner, Jennifer D. Updown numbers and the initial monomials of the slope variety.. The Electronic Journal of Combinatorics [electronic only], Tome 16 (2009) . http://gdmltest.u-ga.fr/item/05686785/