@article{ALCO_2019__2_4_621_0,
     author = {Stembridge, John R.},
     title = {Sign-twisted {Poincar\'e} series and odd inversions in {Weyl} groups},
     journal = {Algebraic Combinatorics},
     pages = {621--644},
     publisher = {MathOA foundation},
     volume = {2},
     number = {4},
     year = {2019},
     doi = {10.5802/alco.62},
     mrnumber = {3997515},
     zbl = {1417.05246},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/alco.62/}
}