@article{MAN_1972__199_162322,
     author = {I.G. Macdonald},
     title = {The {Poincar\'e} {Series} of a {Coxeter} {Group.}},
     journal = {Mathematische Annalen},
     pages = {161--174},
     publisher = {mathdoc},
     volume = {199},
     year = {1972},
     zbl = {0286.20062},
     url = {http://geodesic.mathdoc.fr/item/MAN_1972__199_162322/}
}