@article{05686996,
title = {Permutations with ascending and descending blocks.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {17},
year = {2010},
zbl = {1215.05007},
language = {en},
url = {http://dml.mathdoc.fr/item/05686996}
}
Steinhardt, Jacob. Permutations with ascending and descending blocks.. The Electronic Journal of Combinatorics [electronic only], Tome 17 (2010) . http://gdmltest.u-ga.fr/item/05686996/