@article{IM_1985__79_143189,
     author = {Louis J. Billera and Margaret M. Bayer},
     title = {Generalized {Dehn-Sommerville} relations for polytopes, spheres and {Eulerian} partially orderd sets.},
     journal = {Inventiones mathematicae},
     pages = {143--158},
     publisher = {mathdoc},
     volume = {79},
     year = {1985},
     zbl = {0543.52007},
     url = {http://geodesic.mathdoc.fr/item/IM_1985__79_143189/}
}