%0 Journal Article %A Bridson, Martin %T Fractional isoperimetric inequalities and subgroup distortion %J Journal of the American Mathematical Society %D 1999 %P 1103-1118 %V 12 %N 4 %U http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-99-00308-2/ %R 10.1090/S0894-0347-99-00308-2 %F 10_1090_S0894_0347_99_00308_2