@article{02041497,
title = {The Charney-Davis quantity for certain graded posets.},
journal = {S\'eminaire Lotharingien de Combinatoire [electronic only]},
volume = {50},
year = {2003},
zbl = {1033.06002},
language = {en},
url = {http://dml.mathdoc.fr/item/02041497}
}
Reiner, Vic; Stanton, Dennis; Welker, Volkmar. The Charney-Davis quantity for certain graded posets.. Séminaire Lotharingien de Combinatoire [electronic only], Tome 50 (2003) . http://gdmltest.u-ga.fr/item/02041497/