@article{IM_1982__68_142935,
     author = {Y. Felix and J.C. Thomas},
     title = {The {Radius} of {Convergence} of {Poincar\'e} {Series} of {Loop} {Spaces.}},
     journal = {Inventiones mathematicae},
     pages = {257--274},
     publisher = {mathdoc},
     volume = {68},
     year = {1982},
     zbl = {0476.55016},
     url = {http://geodesic.mathdoc.fr/item/IM_1982__68_142935/}
}