@article{05050775,
title = {Reduced canonical forms of stoppers.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {13},
year = {2006},
zbl = {1137.91334},
language = {en},
url = {http://dml.mathdoc.fr/item/05050775}
}
Siegel, Aaron N. Reduced canonical forms of stoppers.. The Electronic Journal of Combinatorics [electronic only], Tome 13 (2006) . http://gdmltest.u-ga.fr/item/05050775/