1. Generalized Dehn–Sommerville relations for polytopes, spheres, and Eulerian partially ordered sets;Bayer;Invent. Math.,1985
2. N. Bergeron, S. Mykytiuk, F. Sottile, and, S. van Willigenburg, Shifted quasi-symmetric functions and the Hopf algebra of peak functions, math.CO/9904105, 1999.
3. Schubert polynomials, the Bruhat order, and the geometry of flag manifolds;Bergeron;Duke Math. J.,1998
4. Hopf algebras of edge-labelled posets;Bergeron;J. Algebra,1999
5. N. Bergeron, and, F. Sottile, A Pieri-type formula for isotropic flag manifolds, math. CO/9810025, 1999.