@article{05050793,
title = {Grothendieck bialgebras, partition lattices, and symmetric functions in noncommutative variables.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {13},
year = {2006},
zbl = {1098.05079},
language = {en},
url = {http://dml.mathdoc.fr/item/05050793}
}
Bergeron, N.; Hohlweg, C.; Rosas, M.; Zabrocki, M. Grothendieck bialgebras, partition lattices, and symmetric functions in noncommutative variables.. The Electronic Journal of Combinatorics [electronic only], Tome 13 (2006) . http://gdmltest.u-ga.fr/item/05050793/