M. Aguiar, N. Bergeron, and F. Sottile, Combinatorial Hopf algebras and generalized Dehn???Sommerville relations, Compositio Mathematica, vol.142, issue.01, pp.1-30, 2006.
DOI : 10.1112/S0010437X0500165X
URL : http://arxiv.org/abs/math/0310016

E. Babson and E. Steingrímsson, Generalized permutation patterns and a classification of the Mahonian statistics, Sém. Lothar. Combin, vol.44, issue.18, p.pp, 2000.

J. Loday and M. O. Ronco, Hopf Algebra of the Planar Binary Trees, Advances in Mathematics, vol.139, issue.2, pp.293-309, 1998.
DOI : 10.1006/aima.1998.1759

C. Malvenuto, Produits et coproduits des fonctions quasi-symétriques et de l'algèbre des descentes, p.16, 1994.

N. Reading, Lattice congruences, fans and Hopf algebras, Journal of Combinatorial Theory, Series A, vol.110, issue.2, pp.237-273, 2005.
DOI : 10.1016/j.jcta.2004.11.001

N. J. Sloane, The On-Line Encyclopedia of Integer Sequences
DOI : 10.1007/978-3-540-73086-6_12