@article{10_37236_1866,
     author = {Petter Br\"and\'en},
     title = {Sign-graded posets, unimodality of {{\(W\)}-polynomials} and the {{C}harney-{D}avis} conjecture},
     journal = {The electronic journal of combinatorics},
     year = {2004},
     volume = {11},
     number = {2},
     doi = {10.37236/1866},
     zbl = {1065.06001},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1866/}
}