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
Noncommutative Pieri Operators on Posets, memory of Gian-Carlo Rota, pp.84-110, 2000. ,
DOI : 10.1006/jcta.2000.3090
Peak quasisymmetric functions and Eulerian enumeration, Advances in Mathematics, vol.176, issue.2, pp.248-276, 2003. ,
DOI : 10.1016/S0001-8708(02)00067-1
Decomposable compositions, symmetric quasisymmetric functions and equality of ribbon Schur functions, Advances in Mathematics, vol.204, issue.1, pp.204-240, 2006. ,
DOI : 10.1016/j.aim.2005.05.014
On posets and Hopf algebras. advances in mathematics, pp.1-25, 1996. ,