@article{10_37236_1827,
     author = {Nathan Reading},
     title = {The cd-index of {Bruhat} intervals.},
     journal = {The electronic journal of combinatorics},
     year = {2004},
     volume = {11},
     number = {1},
     doi = {10.37236/1827},
     zbl = {1067.20050},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1827/}
}