@article{05050786,
title = {Permutations generated by a stack of depth 2 and an infinite stack in series.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {13},
year = {2006},
zbl = {1097.05002},
language = {en},
url = {http://dml.mathdoc.fr/item/05050786}
}
Elder, Murray. Permutations generated by a stack of depth 2 and an infinite stack in series.. The Electronic Journal of Combinatorics [electronic only], Tome 13 (2006) . http://gdmltest.u-ga.fr/item/05050786/