1. The extended f-vectors of 4-polytopes;Bayer;J. Combin. Theory Ser. A,1987
2. Generalized Dehn–Sommerville relations for polytopes;Bayer;spheres and Eulerian partially ordered sets, Invent. Math.,1985
3. The toric h-vectors of partially ordered sets;Bayer;Trans. Amer. Math. Soc.,2000
4. A new index for polytopes;Bayer;Discrete Comput. Geom.,1991
5. Monotonicity properties of the cd-index for polytopes;Billera;Math. Z.,2000