@article{GDZPPN00244304X, title = {Flag f-vectors and the cd-index.}, journal = {Mathematische Zeitschrift}, volume = {217}, year = {1994}, pages = {483-500}, zbl = {0805.06003}, url = {http://dml.mathdoc.fr/item/GDZPPN00244304X} }
Stanley, Richard P. Flag f-vectors and the cd-index.. Mathematische Zeitschrift, Tome 217 (1994) pp. 483-500. http://gdmltest.u-ga.fr/item/GDZPPN00244304X/