%0 Journal Article %A Brady, Noel %A Bridson, Martin R %A Forester, Max %A Shankar, Krishnan %T Snowflake groups, Perron–Frobenius eigenvalues and isoperimetric spectra %J Geometry & topology %D 2009 %P 141-187 %V 13 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.2140/gt.2009.13.141/ %R 10.2140/gt.2009.13.141 %F GT_2009_13_1_a4