@article{10_1090_S0894_0347_98_00249_5,
     author = {Brenti, Francesco},
     title = {Lattice paths and {Kazhdan-Lusztig} polynomials},
     journal = {Journal of the American Mathematical Society},
     pages = {229--259},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {1998},
     doi = {10.1090/S0894-0347-98-00249-5},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-98-00249-5/}
}