%0 Journal Article %A Alexander Lubotzky %A Avinoam Mann %T On groups of plolynomial subgroup growth. %J Inventiones mathematicae %D 1991 %P 521-534 %V 104 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1991__104_1_143894/ %F IM_1991__104_1_143894